Year: 1892

page_text: I, BYRON HENRY ROSE, of Rochester, in the County of Monroe, and State of
New York, United States of America, Hardwareman, 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 improvement relates to spring-balances for holding sash; and it consists in
the combination of a case provided with two side plates, a spring-drum turning on a
rivet between the side plates, a loose rim or cover encircling the spring-drum, and a
spring placed between one of the side plates and the cover, whereby the latter is
forced against the drum to produce brake-action, as hereinafter more fully
described.
In the drawings,
Figure 1 is a perspective view of the device.
Fig. 2 is a longitudinal vertical section of the same.
Fig. 3 is a cross section in line xx of Fig 2.
A indicates the case. It consists of a face-plate a and two side plates bb, the
latter enclosing the spring drum and cover.
B is the spring drum, on which winds the tape C, attached to the sash. The
drum is operated by a central coiled spring D, as usual. The drum consists of a
cylindrical face c on which the tape winds and a projecting vertical rim or flange d,
which extends outward some distance from the face, as shown in the cross section,
Fig. 3.
E is the loose rim or cover which encloses the drum. It consists of a shell
similar in form to the drum and resting loosely between the two side plates bb of
the case.
Its outer side is circular; but its inner ends fi are straight and tangential
and extend clear back to the face-plate of the case, by which means it entirely
encloses the interior parts. The inner ends of both the drum and cover are open,
as shown, and the edge g of the cover bears against the rim d of the drum. Each
part has a hollow interior hub h, which rests on the rivet k, that exteuds from side
to side through the case. By this means both parts are held in position. The
driving spring D is attached at one end to the hub of the cover E and at the other
to the face of the drum B, and since the cover is non-revolving the spring is wound
up by the turning of the drum.
G is a flat spring interposed between the exterior closed face of the cover E and
the side plate 6 of the case A. It exerts pressure against the cover and forces the face
of the latter against the rim d of the drum, thus producing the necessary brake
action. The pressure of the spring is gauged at the time the rivet is fastened in
place and requires no adjustment afterward, thus presenting great advantages over
those devices where the brake has to be tightened up by a screw or other means
after the parts are put together.

page_text: The part E serves the double purpose of a cover to enclose and hide the winding-
-drum and as brake to the same, and being loose and unfastened, except by the rivet it
is readily pressed up to place by the spring.
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 :-
In a sash balance, the combination of the case A, provided with the side plates bb,
the spring drum B, turning on a rivet therein and provided with the projecting
rim d, the cover E, fitted loosely between the side plates, enclosing the drum and
resting against its rim d, and the spring G, interposed between the cover and the
side plate of the case for forcing the cover against the rin of the drum, as herein
shown and described.
Dated this 5th day of August 1892.
F. W. BARKER,
Applicant's Agent.