US231677A - Shutter-worker - Google Patents

Description

P. K. OLA-LLY. Shutter Worker.

Patented Aug 31,1880.

Invent 0r 9. 4 W- Zhtnessea.

UNITE ra'rns PATENT SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 231,677, dated August 31, 1880. Application filed J auuary 17, 1880.

To all whom it may concern Be it known that I, PATRICK K. OLALLY, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Means for Operating and Fastening Blinds and Shutters, (Case B,)of which the following is a specification.

This invention has for its object to provide improved means for operating an outside blind or shutter and fastening the same in any desired position from the inside of the window.

To this end my invention consists in the improved means which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a horizontal section of a portion of a window casing and blind. Fig. 2 represents a section on line 00 a, Fig. 1. Figs. 3 and 4 represent enlarged sections on line 3 y, Fig. 1, showing the bolt in different positions. Fig. 5 represents a section of one of the parts detached, and Fig. 6 represents a front View of another part detached.

' Similarletters of referenceindioatelike parts in all the figures.

In the drawings, A represents a window-casin g, and B represents an ordinary blind hinged to the casing in the usual manner. One of the hinges O of the blind is provided with a pinion, D, which is rigidly attached to the portion of the hinge that is attached to the blind.

E represents a rack formed on a rod, E, which is suitably secured to a bolt, F, in such manner that said bolt can be rotated without disturbing its connection with the rod E.

G represents a socket or bushing secured to the casing. I Said socket has a screw-threaded orifice adapted to receive the bolt F, and the screw-threads are cut away to form channels or enlargements g g, extending through the socket and having two threaded portions, 9 g.

The bolt F is screw-threaded on its periphery, and the threaded portion is partially cut away at f f, lengthwise of the bolt, which cutaway portions are separated by threaded portions f f, the cut-away portions being of such width that they will receive the screwthreaded portions g g of the socket and permit the threaded portions f f to fit in the cut-away enlargements g g of the socket, as shown in Fig. 3. When the bolt is in this position it is adapted to be moved freely through the socket and cause the rack E to turn the blind on its hinges.

When the bolt is partially turned from the position shown in Fig. 3 its threaded portions f engage with the threaded portions 9 of the socket, as shown in Fig. 4, so that the bolt is locked and prevented from moving lengthwise.

It will be seen that the blind can be fastened by the described means in any desired position, whether open or shut, and as said bolt is accessible only from the inside of the window, it follows that the blind cannot be moved from the outside without breaking the hinge or the window.

The rod E is preferably threaded on its inner end and screwed into a tapped socket in the bolt, the threads of the rod and socket having a quicker pitch than the threads ofthe bolt F and socket G, so that in case the blind is either opened or closed, so that the bolt cannot be moved lengthwise in one direction or the other, and the bolt F is in such position that its threads do not register with the threads of the socket, the bolt may be moved suffioiently to enable its threads to register with the threads of the socket by slightly rotatin g the bolt, such rotation causing the threads of the rod E and its socket to give the bolt F a slight longitudinal movement sufficicnt to accomplish the desired result.

I prefer to provide the hinge with a lug, l, to bear against the rack and prevent the latter from being separated from thepiniou either by being pressed up, downward, or outward, as shown in Figs. 1 and 2.

I claim as my invention 1. As a means for operating and fastening a blind or shutter, a socket or bushing adapted to be secured to a window-casing and'provided with internal screw-threads which are partially cut away to form longitudinal channels or enlargements in the socket, a bolt provided with screw threads formed to engage the threads of the socket and partially cut away to correspond with the socket, as described, and a rod secured to the end of the bolt and provided with rack-teeth adapted to mesh with rotated, substantially as and for the purpose specified.

In testimony WhereofIhave signed myname to this specification, in the presence of two I 5 subscribing Witnesses, this 13th day of J annpinions or segments rigidly attached to the blind or shutter, as set forth.

2. The combination of thepartially-threaded rotary bolt F, its partially-threaded socket G,

the rod E, having the rack E, and the pinion D, engaging the rack and preventing thclonary, 1880.

gitudinal movement of the rod when the blind is opened or closed, the rod having a threaded v PATRHJK 0 DAILY end and the bolt having a threaded socket to Witnesses:

O. F. BROWN,

engage the threaded end of the rod, whereby GEO. W. PIERCE.

the bolt is caused to move longitudinally when

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