An Improvement in Sash Balances.
Year: 1891

page_text: Date of Application, 21st Apr., 1891-Accepted, 23rd May, 1891
COMPLETE SPECIFICATION.
An Improvement in Sash Balances.
I, RICHARD MORGAN GARDNER of No. 3724 Langley Avenue, in the City
of Chicago in the County of Cook and State of Illinois United States of America,
Gentleman, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :—
My invention relates to an improvement in sash balances, and its object is to
improve the means for supporting the weights. To this end it consists in the
construction hereinafter described and claimed.
Like letters refer to the same parts in the several figures of the drawings, in
which,
Figure 1 is a vertical longitudinal section of the clamping block and wedge piece,
shewing the bail and ribbon in side elevation, and the weights supported thereon;
Figure 2 is a vertical cross section, shewing the bail in end elevation, and the
weight supported thereon;
Figure 3 is a horizontal section on the line X-X;
Figure 4 is a similar sectional view of a modified construction and Figure 5 is a
perspective.
In the drawings, A represents a tape or ribbon of a well known form, the lower
end of which is looped around a wedge piece, C, which latter fits in a correspondingly
shaped socket formed in the clamping block or base piece, B.
This form of construction is similar to that contained in my application filed
March 14th, 1889, No. 343,821, and consequently 1 herein lay no claim to such
construction; but simply illustrate and describe it, with a view of showing the
connections of the devices which I employ in the construction of my present
invention. D represents a bail, preferably of resilient wire, and having its ends
bent so as to form hooks which may clasp the sides of the clamping block, as is
shown. This bail, before it is adjusted in position, has one of its ends passed
through an aperture in the balancing weight of the sash balance, and after such
weight is forced down so as to be supported upon the loop of the bail, the two ends
of the latter are passed through an opening in the clamping block, and hooked over
the upper edge of the same, or are otherwise secured thereto. The wedge piece
and tape or ribbon are then secured in their proper positions in the clamping block.
It is manifest that in this manner the bail is conveniently secured and held in place,
and the greater the strain or weight upon it or the ribbon, the more securely will
the bail be kept from slipping out of its place; and yet, by simply loosening the
wedge block and removing the same, the bail inay be readily detached from its
position, and a different weight or a different bail, or both, be substituted.
It is obvious that many modifications may be made in the form of the bail, and in
the manner of attaching it, and in other details of the invention, without departing
from the principle of the same; and I wish it to be understood that I do not desire
to limit myself to the precise construction shown and described. A slight
modification is represented in Figure 4 of the drawings, where the grooves are
made upon the interior surfaces of the clamping block or base piece, in which
grooves the shanks of the bail are designed to be placed; and in this way, swaying
of the weight and bail is prevented, and steadiness is secured.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-

page_text: 1-In a sash balance, the combination of a block or base piece, having an
opening therethrough and a fastening device for securing the tape therein, with a
bail, carrying the weight, and secured in the opening in the block or base piece;
substantially as described.
2-In a sash balance, the block or base piece having an opening therethrough, a
tape or similar suspension device secured thereto, a bail, having a weight supported
in its loop and its ends passed through the opening in the base piece and secured to
the latter; substantially as described.
3 In a sash balance, the combination of the block or base piece havin an
opening therethrough, an elastic wire bail carrying a weight in its loop and h. ng
its ends passed through the opening of the base piece and hent into hooks for
supporting it thereon, and a tape which is suitably secured by a wedge block in the
opening in said base piece; substantially as described.
4-In a sash balance, the combination of the base piece having an opening
therethrough and grooves upon the inner faces of the same, a bail, supporting a
weight, and having its ends passed through the opening of the base piece and resting
within the grooves of the same, a tape, and a wedge block securing the same in the
base piece; substantially as described.
Dated this 23rd day of March 1891
RICHARD MORGAN GARDNER.
Cruikshank & Fairweather,
62, St. Vincent Street, Glasgow, Agents.