US22446A - Blind-fastener - Google Patents

Description

blind and so as to cause the said plate to lap UNITED STATES PATENT OFFICE.

JOHN MURPHY, OF BOSTON, MASSACHUSETTS.

BLIND-FASTENER.

Specification of Letters Patent No.

T o all whom it may concern.'

Be it known that I, JOHN MURPHY, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Outside Shutter or Blind Fastener; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which- Figure l, is a front elevation, and Fig. 2, a side view of a window frame and blinds furnished with my invention. Fig. 3, is a top view of the shutter fastener as it appears when the blind is closed. Fig. 4, is a horizontal section of it, showing the position of its parts, when the blind is turned entirely back. Fig. 5, is a vertical and longitudinal section of it. Fig. G, is a front view of the notched pintle. Fig. 7, is a top View of the shank, catch and the Ipintle bearing.

In the drawings, A, A, denote a pair of blinds, and B a window frame to which they are applied, each blind having two metallic pintles, a, 7), fastened to its outer edge and extending from it as shown in the drawings.

The head c of the lower pint-le is furnished with a notch or recess d, arranged in it as shown in the drawings, the pintle or that part of it extending below the head being made to enter a round bearing or step formed in a metallic shank, C, which projects and is driven into the window frame. The upper pintle of the blind works in and is supported by another stepped shank or carrier, C1, each of the said shanks being supported by a strut, c.- The lowermost shank C supports the box or case, D, of a spring catch, E, whose shank works longi tudinally through the box and has a spring 7L, applied to it so as to retract it an'd thereby draw the spring lcatch toward the pintle head.

The thumb projection, z', of the spring catch screws into the shank of the catch and carries a plate, lc, which not only constitutes a cover to the box or case of the spring catch, but as a means of preventing the blind pintles from being raised out of their bearings,

as by turning the plate or cover toward the 22,446, dated December 28, 1858.

or project a little over the pintle head such plate will operate to prevent t-he pintle from being raised out of its step.

It is well known that it occasionally happens that a blind by some accidental means, while being either opened or closed, whether during a storm or under other circumstances, becomes unhinged. The plate 7c, 0r movable cover combined with the catch box in manner as described operates to prevent such accident from taking place. The form and arrangement of the spring catch with respect to the notched pintle is sho-wn in the drawings and is such as to require the spring catch during the process of unlatching it from the pintle to be forced away from the window frame.

When the blind is turned entirely back against or nearly against the wall of the building, the spring catch will take into the notch and hold the blind in such position. hen it may be desirable to close the blind, it and the stud or projection of the spring catch may be grasped between the thumb and lingers of a person so as to force the catch outward and out of the notch. This having been done, the blind may easily be turned on its hinges so as to carry the notch by or beyond the catch. After having been closed, the blind may be fastened in such position by any suitable means.

I do not claim the window blind or shutter fastener shown and described in the United States Patent No. 4633, but

I claiml. The arrangement of the spring catch on the pintle step shank and with respect to the notched pintle as described.

2. I also claim combining with the catch and its case, a movable projection or cover, applied so as to be capable of being moved on and off the pintle head and to carry the thumb projection or stud of the catch substantially in manner and for the purpose specified.

JOHN MURPHY.

Iitnesses R. H. EDDY, T. P. HALE, Jr.

Images