US279379A - Benjamin f - Google Patents

Description

(Nb Model.)

B. F. HALL.

METALLIC PIVOT FOR WINDOW BLIND SLATS. No. 279,379. Patented June 12,1883.

I UNITED STATES PATENT OFFICE.

- BENJAMIN F. HALL, OF LANSING, MICHIGAN, ASSIGNOR OF ONE-THIRD 'TO STEPHEN B. CARR, OF SAME PLACE.

METALLIC PIVOT FOR WINDOW-BLIND SLATS.

SPECIFICATION forming part of Letters Patent No. 279,379, dated June 12, 1883.

- Application filed March 16, 18835010 model.)

' To all whom it may concern Be itknown that I, BENJAMIN F. HALL, a citizen of the United States, residing at Lansing, in the county of Ingham and State of Michigan, have invented certain new and useful Improvements in Metallic Pivots for Window-Blind Slats; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in that class of window-blinds in which the slats are made to revolve on pivots; and the in vention consists in a metallic tenon having conical ends for insertion into. the stile and slat, and adapted to serve as a pivot for the slat, as hereinafter more fully set forth.

In the annexed drawings, illustrating my invention, Figure l'represents in side elevation a portion of a window-blind with my improved tenons or slat-pivots applied to a blindstile. Fig. 2 represents the inner side of a blind-stile with my improved slat-pivots attached. Fig. 3 shows a series of slats attached to the slat-rod and having metallic sockets inserted into their ends for the reception of the pivots that are attached to the stile. Fig. 4 is a sectional view of stile and slat with metallic pivot. Fig. 5- is a similar view, showing one end of the pivot inserted into a socket in the end of the slat. Fig. 6 is aview of my improved slat-pivot.

Like letters designate like parts.

The pivots of revolving blind-slats are usually made in one piece with said slats, the manufacture of which thus involves considerable waste of time and material. That has been overcome, however, by the employment of metallic tenons or pivots attached to the ends of the slats and journaled in the'stiles. Heretofore such metallic pivots or tenons have been attached generally to the slats, and have been made. in various forms differing from that embodied in my improved tenon or slatpivot.

It is obvious that when a metallic tenon is attached to a blind-slat it must be inserted into the end of the slat in the direction of the grain of the wood, which renders it liable to weaken and split the slat. This difficulty is obviated by inserting the longer end of the pivot into the stile, leaving its shorter portion or head to engage a small depression or recess in the end of the slat, thereby supporting the slat so that it can be turned to any desired position without injury.

To this end my improved slat-pivot consists of a metallic tenon, A, formed with conical ends a b, and a disk portion, 0, arranged near one of i said ends. When using this tenon as a pivot for a blind-slat the long conical end a is inserted into the stile B, with the collar or washer 0 bearing against the surface of thestile, leaving the short conical end or head I) to project and serve as a pivot for the slat. The longer end, a, of the tenon may be formed as a nail to-be driven into the stile, or it may be screw- .threaded, so as to be readily turned into its place. The shorter or journal end, Z), of the tenon may be loosely fitted into a small conical depression or recess formed in the end of the slat C for its reception, or said recess may be provided with a metallic socket, d, so that the slat may be turned freely without liability of wear or other injury. The sockets d are not essential, however, and may be dispensed with, if desired.

Cylindrical tenons for blind-slats have been surrounded with washers that are placed on the tenon between the stile and the end of the slat; but this I do not claim.

It is obvious that the tenons may be i11- serted into the slats instead of into the stiles;

but, for reasons before stated, I prefer to se-.

cure them to the stiles. These metallic tenons or slat-pivots can be readily and cheaply applied, either in the construction of new blinds or the repair of old ones, and will be found durable and efiicient. V

Having thus described my invention, what I slats 0, provided with sockets d, substantially as described. 10

In testimony whereof I affix my signature 1n claim as ne 3 and desire to secure by Letters Patent, is

1. A metallic tenon having conical ends a I) and washer 0 and adapted to serve as a pivot i presence of two witnesses. 5 for a blindslat substantially as described.

2. In window-blind, the combination, with l W'itnesses: the stiles B 13, having metallic tenons A, pro- BERNARD KELLY,

T. M. ALsDoRF.

.BENJAMIN F. HALL.

vided with conical heads I), of the movable

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