US94719A - Improved blind-fastening - Google Patents

Description

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JOHN -CRYEIL OF GREENPOINT, NEW YORK.

Lettcrslatent No. 94,719, dated September 14,1869.

IMPROVED BLIND-FASTENING. v

The Schedule referred tov in these Letters Patent and making part of the samt:-

To all whom it may concern:

Beit known that I, JOHN E. ORYER, of Greenpoint, in the county of Kings,.and State of New York, have invented certain new and useful Improvements in -Blind-Fastenings; and I do hereby declare that the following is a full and exact description thereof.

My fastening is constructed in connection with the hinge, and is secured to the building with the same fastenings. This alone is not new, but my mode of' construction and operation involves some important points of novelty. v

,I will proceed to describe what-I consider the best means of ycarrying outl my invention, and will afterwards designate the points which I believe to be Vnew therein. The accompanying drawings form a part of this specification.

Figure 1 is a side elevation of'V the fastening, part-ly in section. The parts are in the position which they assume when the blind is open.

Figure 2 is a face view, with the parts in the position which they assume when the blind is closed.

Figure 3 is a plan view of iig. 1.V

Figure 4 is a plan view of a modification of theform of the parts. to be used to hold the blind secure in a partially closed position, as well as entirely open,

Figure 5 is a front elevation, partly broken, showing the same modification as fig. 4.

Figures 6 and 7 show still another modification. Fig. 6 is afront view of' the main or fixed part of' the hinge, with the latch broken off. Fig. 7 represents a vertical section of a portion of the same.

Similar letters of reference indicate corresponding parts, or tliose parts which most nearly correspond with each other, in all the figures.

A is a flat portion, which is adapted to be secured to the wood-work at the side of' the window, by screws in the ordinary manner.

'A1 is an aun, which extends out therefrom, and carries an upright pivot, a, on which the turning part of' the hinge B is supported. y

The turning part may be constructed -in any approved manner, extending down and outward upon the blind so as to take a very firm hold thereof, if preferred. I haverepresented it as extending out only a little ways, and forming theu'sual short turn where it commences to be fitted against the blind., I have not represented the wood-work either of the building or of the blind. The hinge fits against both, and is secured thereto in the ordinary manner, as will be readily understood.

Thefastening is effected by means of a latch, O, which is supported, when not in use, in a horizontal,

or nearly horizontal position, and which catches upon.

the upper edge of the turning part B, and holds it This modification allows the same parts probably be struck np in dies with little labor.) VI may say here, that I prefer to make the parts of malleable cast-iron. The latch is pushed through from the rear or back of the faceplate A, and an enlarged head, or

equivalent part on the rear end of the latch, is received in a recess prepared for it in the Apiece A, so that it is free to turn to the proper extent, butcannot be drawn out.

In order to provide a suitable space for this head C', withouttoo greatly increasing the thickness of the part A, I form the latter with a casing, A, which projects outward from theface` above the part A, as represented in the several figures. This' -casing is hollow, and its hollow interior receives the head G', onthe back end of the latch G. Its form varies, `according to the form of the head, as will appear below.

The several modifications which I propose in the form of the parts, all conform to the above description, but beyond this it will be necessary to describe them separately.

Referring to figs..1, 2, and 3, the rear end of' the latch C is provided with a head at the back end, which is in the form of a short cylinder, extending transversely to the latch. It is received in a corresponding recess, andallows the latch to be simply raised and lowered. It cannot be turned laterally to any considerable extent. It allows the latch to perform the single function of catching upon the part B, and holding the blind open.

4Referring to figs. 4 and 5, the head or enlargement C', on the back end of the latch C, is in theform ofa sphere. It fits in a corresponding recess in the parts AA, and the opening through the front of the recess is not, (as inthe form first described,) a mere narrow slot up and down; but is wider at the front, so as to allow a considerable lateral movement or swinging motion sidewise of the latch. The latch is also provided with a notch, c', at about the middle of its length.

This form of the invention performs the same function of holding the blindopen as the form first described, and it also performs the additional function of holding the blind firmly in a partially closed position. It is frequently desired, in admitting air and excluding the sunshine, to holda blind alittle wayopen, and I have provided for attaining this :end by' very. simple means. The latch with this form of the invention being in its' ordinary position, (that shown in the other form, fig. 3,) the blind on swinging back raises the latch, which again falls by its. gravity, and embraces the upper edge of the part B in the notch c, and the blind is thereby held firmly open. All this is pre cisely the same in this second form of the invention, as in the first, and the liberation of the blind with this form, as .also a third to be described, is the same; that is to say, the finger is applied under the latch C, to lift it, and immediately that the notchc is clear of the part 'B, the blind is free to close.

Now, to render available the additional function of' nthis second form` of the fastening, it is necessary simply toA bring the blind into a position about two-thirds closed, that isto say, standingat an angle of about sixty degrees with the window, and vthen to lift the latch C, and swing" it laterally into the lposition shown in fig. 4. In this position, the notch o drops upon and secures the part B by embracing its upper edge, and it now holds the blind rnily in the partially closed position. When it is desired to change the blind from this position` the latch 0 is lifted by the finger, and moved'back to its original position.

In these lateral movements the latch O swings easily, being lifted suliiciently to move it over the pivot a.

Referring to figs. 6 and` 7, I have here represented af'orm of the device which involves a little more labor and expense. It corresponds in function with that last described, that is to say, it performs the duties both of holding the blind open, and of holding it partially closed, but the head, as I have termed it, at the back end of the latch O, is in the form of a short vertical cylinder, adapted to turn` horizontally, and'allow for the swinging or sidewise motion of the latch. The liberty for the vertical motion of the latch is obtained by connecting the latch loosely to this cylinder. This is effected by casting the cylinder with a mortise or slot extending into or through it,'and riveting the flat end of the latch loosely therein.

' Instead of mortising thelatch through theupright cylinder in this formof the device, I can, if preferred, fork the latch and let it 'embrace the fiattened part of I esteem it important in all the forms tovprotect the latch C against any'force tending to press it back into the wood-work. It will be observed that the blind, in

swinging back into position, mayact with considerablen force against the bevelled end of the latch before liftv ing it. This will be particularly liable to occur when the parts are very rough or rusty. Now, if the latch O were to be pressed backward by such force against the wood-work, it might wear or crush the wood so as to allow it to move backward into the wood-work, and thus derange lthe action. In all the forms of my invention, I protect the device against such derangement' by making an offset on the under side of the latch .0,

as indicated by c2 striking against the lower part of the projection A2. This receives -all the force tending to move the latch backward.

Some of the' advantages'due to certain parts of my invention may be realized without the use of the other parts, but I prefer to employ the Whole .in-combination, as here described.

What I claim, is-

1. A fastening-latch, passed through from'the rear of the hinge, and secured thereto by a head, to form a joint.

2. In combination with a latch, arranged as described, the offset or. shoulder c2, to resist any backward motion of the latch. l

3. In combination with theabove, the notch c1 in the latch, to hold thefblind'in a partially closed position.

. JOHN E. CRYER. Witnesses O. G. Llvnves, THOMAS I). STETSON.

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