US109661A - Improvement in shutter-workers - Google Patents

Description

NPETCR8. PHOTO-LITHOGRAPHER, WASHINGTON. D. C

sited tapes' @mutation Leners Paca No. 109,661, 1aed November A29, 1870 @narrated November 19, 1870.

IMPROVEMENT IN SHUTTERWORKERS.

The schedule rex-enea to in these Lerteraratent and makingpart of che same.

I, CHARLES A. lo'r'rniuot the city and county of Providence, State ot' Rhode Island, have invented -a new and improved Blind and Shutter-Adjuster, 'ot which the following,r is a specilcation.

l am aware thatmuch time has bceiremployed in the endeavor to make some mechanical contrivanee by which a. blind o r shutter can be opened or closed. trom the inside Ofa room without raising the window, bntthose invented heretofore have never come .into general use by reason of the cost OF constructing and applying them. j

The great utility ot' any invention which would ae- `conrplish the result required, and atthe saine time be so made as to be inexpensive, readily suggests itself.

.lhe danger oi' children and aged persons falling` from the window in attempting to close blinds and shutters, as at present fastened, is very great, especially when the. wind is blowing miOnthe shutters.

lhe nature oi" my invention for opening or shutting ablind is a combination ot'levers so acting upon cach other as to turn the object attached to one of them half-way round when a i'orce is applied to the Other, carrying it either backward or ibrward.

Said levels are the fixed lever A, to which the blind or shutter is fastened, the t'ulcrum-lmr 13, and the level' (l, to which the power is applied, and having at one end a stud or hook which works into a slot in lever A.

In the accompanying drawing- Figure l shows the position ot' my. adjuster when the blind is closed, `the parts A, B, and U ot' the atl-- justcr, the manner ot' attaching 4the blind to the arm or lever, and the manner ot' applying the force to the adjuster by means ot' a spindle, Gr,with .a screw on one end working in a tubular nut, T. The course oi` the levers is also indicated by the dott-ed lines and arrows.

v Figure 2 shows the position of the adjuster when the blind is opened, and also the various parts, and theeourse which the levers travel in closing the blind or shutter.

Figure 3, a front or edge view ofthe adjuster'.

Figure 4, the inet-allie socket, within whichworks the head of the nut, keeping -it in place.

Figure 5, the washer, within which works the spindle, keeping it in place while traveling backward and forward.

The parts oi' my invention are the arm or lever A, with two projections at one end, at right angles to each other, X and Y,vso made as to clasp the two sides of the blind or shutter.

Through one ot' the projections a hole is made, 'through which and through theblind a.A bolt is insorted, as an easy mode ot' attaching tl1em, as at 7.

The arm or lever A has a-small round hole near the angle of the projections, 1, and an elongated hole, 2, running nearly the remaining length -of the arm. Thus are made the surtacesupon which act one ot' the other f.

levers, as hereinafter described. l

Y An arm or level', B, a' little curved, with a'hook at each end, and near one end a broad, flattened surface, forming a rest for the spindle or rod transmitting. the power which acts upon the lever next described., and is more fully shown hereafter.

.An arm or lever, O, similar` to A, save that there are no projections, and to the other end of the arm there is lattached a hook.

ihe holes through the arin are similarly shaped to those ot A, the small round one, 3, serving furthe insertion of the hook on the end of B, near the flattened surface, and the other, 4, for the insertion of and working therein ot' thetooth of-the spindle.

The three parts oi' my invention are made of mah. cable iron, this being tougher than cast-iron, and are molded complete and ready to put together after a little liling. rlhey are put together thus:

Holding the lever C in one hand, with the hook up, and taking Bin the`other hand, with the hook up, bring the hook nearest the. flattened surface to the under side of and tothe small hole in the arm or lever C, and insert it by raising the arm until the hook enters the hole, then `holding the two arms one above the other, so that the hooks will be exactly in-line. Take the lever A in the other hand, and insert the hook Oi B in the small hole of A, and the hook of C in the large hole of A, raising the levers as before un`- til the hooks entertheholes, then let them come back to their position. j l

My little device is then iu working order.

l use hooks for holdingthe levers together, both from their small expense as well as the ease with which they are' put together.

To put my adjuster in operation, we must bore a hole of proper size through the side of the building,

in the proper place, and ii'orn the inside We insert the tubular nut T, withinwhich two threads of a screw have -been cast, and over the end of this nut we place the socket E, and then attach tol the end of thetubular nut the crank F; from the outside ofthe building- .we insert the spindle G, upon one end ot' which a thread, fitting into that ot' the nut, has been cast, into thetubular mit and through the washer K.

To the blind or shutter we now attach our little device by the projections or ears X and Y, either by screws vor by putting a bolt and screws through one of the earsand the blind or shutter', or in some other way seeurelyfasteuing the lever A to the blind; then place the blind in position, closed, and bring the tooth H of the spindle into the slot or hole in' lever O.

Now my adjuster is in working order, and ready to do its work o f opening or closing the blind. l

W'e now turn the'crank upon the inside ofthe building, turning it from left4 toward the right; this turns the tubular nut in the same direction, and draws the spindle in o the sameV and toward ns; the spindle acting upon he lever or arm C draws that toward ns, and being pulled back, the hook thereof slides in the elongated opening in A, pulling the arm Ain the saine direction until all the arms are in a position, one above the other, which brings the blind half-way open, or rather the arm A, to which the blind is securely at tached, has so moved as to canse the rim of the blind to describe a quarter-circle.`

A continued turning of the crank exerts a like and 4continued force upon G, and causes the hook now turned by the curved end of the slot in A, markcd', to retravel that cavity, and draws the arm or lever A around; another quarter-circle is described by the rim of the blind, which is nowthrown back against thc side of the house.

'lhe opening in A must be of' just the right dimensions for Vthe proper working of the head or hook of the arm G.

The oiice of the arm B is to keep theother two levers or arms in proper position and j ust at the right distance apart, but so fitted by itshooks in the small holes in A and O as to allow those levers to work freely-and easily about these hooks.

The blind or shutter now being open, we make one turn of the crank, and the threads of the screw and v nut are brought closely together, and the'frietion holds them tightly and secures the blind against the winds.

it out and forward, and the spindle pushing the arml C, carrying it forward; and the hook traveling the slot in A carries the arm A around till all the arms are in position, one above the other; a continued force applied to C, carrying it forward,l causes the hook to work upon the other side of' the slot, and carries the arm A around till the arms A and C are at right angles to each other, and the arm B extending from the extremities of the arms, forming, as it were, the hypothennse of the angle formed by the arms A and G.

lhe blind being closed, we make another turn of the crank, and the saine is closed securely, as before, so that it cannot easily be pulled open from the ontside.

Claim.

Y What I claim as my invention, and desire to secure by Letters Patent, is

The fixed lever A, the fulcruin-bar B with a hook or stud at each end, and the lever C, all combined as set forth, and for the purpose ot' working a blind or shutter.

CHARLES A. POTTER.

fitncsscs J. EnAs'rUs Lnsrnn, HENRY fl. CONANT.

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