US30380A - Sylvenus walker - Google Patents

Description

UNITED STATES PATENT OFFICE.

SYLVENUS WALKER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND S. S. HEMENWAY, 0F SAME PLACE.

SASH-FASTENER.

Specification of Letters Patent No. 30,380, dated October 9, 1860.

To all whom 'it may concern:

Be it known that I, SYLvnNUs WALKER, of Boston, Massachusetts, have invented a new and Improved Construction of Sash- Fasteners; and I do hereby declare that the following is an exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

The invention consists in the adaptation of one met-allie plate, having a dovetailed mortise, to another metallic plate, consisting of a dovetailed tenon, and these are so arranged with regard to each other that when the tenon is slid into the mortise the sash is duly and firmly fastened, in a manner more minutely stated below.

In the accompanying drawings, Figure l represents the window frame, containing the sliding sashes, in perspective; Fig. 2, a sectional view of the upper and lower sashes through line w of Fig. l; Fig. 3, a detached View of the mortised plate and its hook, D as attached to the lower sash; Fig. 4, a dove. tailed tenon plate to be received into the mortised plate.

C, C, represent the window frame, C, the lower sash, C the upper sash.

D represents the thumb piece and hook, that is to be received into the hole (a) fastening down the window.

The sash C is fixed in place, while sash C is made to slide up and down.

It will be seen by inspecting Fig. 2 that when the lower sash is dropped into its place, the hook of D, is received into its place in the hole (a) and constitutes the astening of the window sash. The fastening consists in nothing more than the mutual combination of plates A and B in a manner now to be explained.

In Figs. 3 and 4 the whole of the fastening parts of the sash are shown separately. Plate A is shown with the thumb piece D elevated and the hook projecting in front; the claw of which does not appear distinctly in view. Piece D, is capable of being rotated in its bearings about 180 degrees, so that the shank of the hook may be raised to the vertical position above its bearings or dropped down into the vertical pendent position, as shown in Fig. 2, when the hook is received into the corresponding opening (a) and the sash is locked. The plate A is let into the upper horizontal bar of the lower sash in its rear part and screwed fast to the same by screws, in such manner that the two beveled faces (f, f,) shall be inward. The plate, B, is screwed upon the front or inner face of the lower bar of the upper sash and is received as a dovetailed tenon between the beveled faces (f, f,) of plate A.

It should be remarked that two positions of the lower sash are shown in Fig. 2. The lower one shows the hook of D received into the opening (a) of plate B, in which position the sash is fastened. The second or upper position of the sash, represents the hook of D as having been detached from the opening (a) and raised some inches above it. This relative position of the plates A and B and hook piece D indicates the use and operation of the fastening. But that there may be no misunderstanding I will state the operation.

The parts of the sash being in the position seen in Fig. 1, the handle D is seized by the thumb and finger and raised up so as to'detach the hook from the opening (a) in plate B, when it may be elevated to any point desired; and if it be desired to fasten the window when once open, the weight of the window will carry it to its place, and the 'hook of D, at once drops into its opening (a) and the window is firmly fastened.

Having now described the nature of the invention and the inode of using the same, I would remark that I am aware of the great variety of levers, hooks, and catches that have been adapted to fasten window sashes, and I do not therefore claim broadly the use of a hinged hook or thumb piece as a lock for sashes, nor do I claim any of the forms of side locks or bolts for the fastening as adapted to the sides of sashes, mine being only applicable to the two opposite and contiguous cross bars, one of the upper and the other of the lower sash.

Therefore I claim- In combination with the cross-bars of window sashes, the arrangement of plates A and B when these are locked together by the hook of D, in the manner, and for the purpose herein set forth.

SYLVENUS WALKER. Witnesses:

WM. P. SPENGE, THos. C. SAvoRY.

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