US97502A - Improved sash-holder - Google Patents

Description

www mes aient [chimica lLetters Patent iVm-97,502, dated December 7 1869.

IMPROVED SABE-HOLDER.

' The Schedule referred to in these Letters Patent and making part of the same.

,er f Figure l represents a front or face view of our nnproved sash-lock and fastener.

Figure 2 is a detail horizontal section of the same, taken on the plane of the linew x. fig. 1.

Similar letters of reference indicate corresponding' parts.`

Our invention relates to devices for locking and unlocking window-sashes; and

It. consists in an improved construction and arrangement of parts, whereby a supcrior'fasteilicr is obtained, one not liable to get out of order-,land -which admits of a more ready and convenient adjustment.

'.Lhe invention also consists of a novel hell-crank holder, which is arranged in the ii'ame of a window, and which is, by means of a spring, held against the edge ofthe sash, so that the sash cannot be lowered unless the holder is thrown olf, by means of a lever. The said lever is provided with a projecting lug or notch, whereby it is locked over a fixed plate of the frame, when the sash is lowered, to lock the holder in a notch of the sash, and to prevent the Vraising of the same.

i A, in the drawing, represents a window-frame.

l, a sash in the same. ln the frame A is secured, at the inner edge, a plate,

(l, which has ears, a a, projecting outward into a rccess/cut into the fiaule.

'lo the ears ais, by a pin, b, pivoted a hell-crank, 1)whose one arm, c, projects through an aperture or slot of the plate (l, toward the edge of the sash, its end being enlarged and roughened, as shown.

rlhe other arm, d, ot' the bell-crank is, by a spring, c, held olf thoplate C, said spring serving to force the end of the arm c against the edge of the sash.

lo a pin, f, that projects from the arm c, is pivoted a lever, E, which projects through an aperture or over the inner edge ofthe platey C, so as to be in front of the sash in the room. v

When the'sash is lowe'red to its lowest position, the end of o is, by the spring, forced into a recess of the sash, as shown by'black lines in fig. l.

The lever, which has a shoulder, g, is in this `position locked over a lug, It, that projects ii'om the plate C.

The sash is'now locked, and cannot be raised unless the lever is first lifted oft' the lug h, and then pushed into the. frame, to draw the arm c ofi1 the sash, as shown by redlines in tig. 1.

The sash, when raised, is again, in any position,

locked bythe arm c, which is held against it, and

which is cam-shaped, in such manner, that the more weight is applied to lower the sash, the firmer will it hold the same.

When the sash israised, the arm c simply catches against the plain edge of the same, and is not pushed in far enough as to carry the shoulder g of the lever over the lug h. To lower the sash, it will, therefore, only be necessary to push the lever toward the frame.

This attachment is'very simple and etfective, as it holds the sash in any position, with 'as much certainty as a cord and weight, while it also forms an automatic sash-lock, to prevent the. opening of the window from the outside.

lVe are aware that a vibrating spring-lever, with a plain Asurface on its weight-end, has been used heretofore, and that seri-ations have been employed by others to produce friction; but

Vhat we claim asoonr invention, and desire to sccure by Letters Patent, is

The combination of theserrated vibrating lever l), with the pusher E and plate C, respectively provided with the projection q and lug h, as and for the pur pose specified.

ARTHUR FRANCIS GREGORY.

CHAS. H. ENSIGN Witnesses OHARLEs W AKEMAX, Josera GREEN.

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