US333442A - Shutter-worker - Google Patents

Description

(ModeL) F. E. BROWN.

SHUTTER WORKER. No. 833,442.

illllllll! Patented 1100.29, 1885.

UNITED STATES ATENT OFFICE.)

FRANK E. BROWN, OF WEBSTER CITY, IOIVA.

SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 333,442, dated December 29, 1885. Application filed January 1%, 1885. Serial No. 152,669. (ModeL) T0 at whom it may concern:

Be it known that I, F. E. BROWN, a citizen of theUnited States, residing atWebster City, in the county of Hamilton and State of Iowa, have invented a new and useful Improvement on the invention for Opening and Fastening Outside Window-Blinds which was patented August 10, 1869, to the said F. E. Brown, of which the following is a specification.

This invention relates to shutter-working devices for windows; and the novelty consists in the construction, arrangement, and adaptation of parts, as will be more fully hereinafter set forth, and specifically pointed out in the claim.

Various similar devices have been designed adapted to operate the shutter from the inside of the dwelling, a shaft carrying a worm or gear leading from the inside to and being connected with a gear secured rigidly to the shutters; but in all such cases known to me the shaft was arranged at the side of the shuttergear, and its worm or gear engaged the teeth of the shutter-gear at the outer edge. This threw the horizontal or operating shaft greatly away from the pivot of theshutter, and at such an elevation as to have it interfere with the operation of the window-weights. I pass my operating-shaft directly through the weightbox, and by having its worm engage teeth on the under side of the shutter segmentjor plate I not only throw the said shaft so low as not to have it interfere with the window-weight, but I avoid the formation of teeth upon the upper side of the shutter gear or plate, which surface with my construction is plain and serves to protect the teeth from falling weather. It is true that some of these advantages accrue to the bevel-gear which has heretofore been used in other constructions for a similar purpose; but where bevel-gears are thus used the shutter-gear has to be secured against rising upon the pivot as force is applied from the operating-shaft, as such force is liable to lift the entire sh utter and throw the engaging teeth out of mesh. I provide a peculiar form of bracket, through which the shutter plate works loosely, and which serves to hold the shutter against rising as the operating force is applied.

Hence the object of the invention is to prostructed to the full length of their travel.

vide a shutter Worker which, by engaging teeth upon the under face of the shutterplate, not only allows the operating-shaft to be placed out of the path of the window or sash weights, but also locates the shutter-teeth out of sight and weather. and which by its construction provides against the rising of the shutter as the operating force is applied, the bracket serving to hold the gears into engagement.

The invention is illustrated in the accompanying drawings, which form a part of this specification, and in which- Figure l is a top plan view, showing the shutter in its closed position. Fig. 2 is an outer surface view, and Fig. 3 a perspective view with the shutter removed.

Referring to the drawings, A designates the window-frame, comprising the weight-box B, through which passes the operating-shaft 0, having upon its inner end a knob, c, and upon its outer end a worm, c.

D designates the stationarybracket, having the shutter-pivot d, and having also a horizontal slot, d, which registers with a recess. d", cut into the frame A, as shown.

E designates the shutter, havinga plate, F, with a central orifice, f, which receives the pintle d and teeth f upon its under face,which engage the worm c. As the shutter is opened, this plate F passes loosely but snugly within the recess d d", the upper wall of which gives a bearing to the smooth upper surface of the plate F, and prevents the shutter from being forced up on its pivot d as the shaft Ois operated. The teeth of the plate F are upon the under side, out of sight, and not exposed to snow, dust, &c. By reason of this construction the shaft (J is thrown in close to the pivot, and lower than the path of the shuttergear F, thus allowing the sash-weights to be unob- At the first of the necessary movement to open the shutter the plate F is not engaged in the slot d (1*, and it is not of importance that it should be,for the reason that at such time the shutter is prevented from rising byits contact with the window-frame above. As soon, however, as it is moved the plate F passes into the said recess and the gears are effectively locked into engagement.

ICQ

These features of construction are important in thejartfand. Lthe castings are cheaply and easily made.

I am aware that worm and ratchet have been before usedgfor a similar purpose, and that bevel-gears have also been employed; but I am not aware that a plate, as F,-with teeth upon its under face, has ever been used in connection with a' slotted bracket, as D d, and a worm on a shaft, which passes through the weight-box and is thrown down and at one side therein,to be out of the path of the weight, as set forth. Hence What I claim as new isworm-shaft may be arranged closer to the pivot and out of the path of the sash-weights,

as specified.

F. E. BROWN. Witnesses: I

W. G. WILLSON, P. O. BABOOOK.

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