Year: 1888

page_text: Date of Application, 10th Mar., 1888
Specification Accepted, 27th Apr., 1888
I, CHRISTIAN WILLIAM COOK of Brooklyn Mine, Bingham Canyon, in the County
of Salt Lake and Territory of Utah, United States of America, machinist, 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 that class of sash supporters or upholders wherein rollers
are employed to bear upon or against the inner face of the window-frame, the rollers
being mounted on or carried by the window-sash. Such appliances are designed for
use on windows which have no sash weights or similar counterbalancing devices for
tho sash.
My invention will be fully described hereinafter, and its novel features carefully
defined in the claims.
In the drawings, which serve to illustrato my invention, Figure 1 shows one of the
supporters detached and in front elevation, a part of the roller-frame being broken
away. Fig. 2 is an edge elevation of the same, with a part of the attaching-plate
broken away. Fig. 3 is a back view showing inner face of the supporter that rests on
the wood when the supporter is applied to the sash. All of these views are on a large
scale. Fig. 4 is a front view, on a much smaller scale, of a window provided with my
supporters on the sash. Figs. 5, 6 and 7 illustrate my supporter when inserted in a
mortise in the sash, Figs. 5 and 6 being on the same scale as Figs. 1 to 3, and Fig. 7
on a scale one-half that of Figs. 5 and 6.
Referring to the first three figures of the drawings, A represents the metal base or
back plate of the supporter provided with suitable screw-holes, a a, to receive screws
for its attachment to the sash.
B is a metal frame composed of two side plates, bb, and two cross-bearers, ¿¹ 61,
which tie the two plates of the frame rigidly together.
CC are metal rollers rotatively mounted on fixed bearing-axles c'e' in the ends of
frame B. In order to give these rollers the necessary frictional contact with the face
of the window-frame to compel them to roll when the sash is raised, and at the same
time to avoid, as far as possible, the employment of a yielding elastic material for the
tires or treads of the rollers, I provide the latter with tires c, of thin fabric or material
that will not yield materially to pressure, as a combination of canvas and rubber,
for example, although other material of this character will serve.

page_text: My object is to prevent the contact of the metal roller with the wooden frame, as
such contact of the hard roller with the measurably-soft material of the frame will
inevitably wear a groove in the window-frame if the roller is rough, and if the roller
is smooth it will slip on the frame and not roll. At the same time, if the roller be
tired or faced with a thick yielding material, it will acquire flattened faces or facets
from the pressure and will soon lose its proper circular form. My roller has none of
these objectionable features.
The frame B is connected to the plate A in the following manner: In the plate A
are formed two slots, a' a', extending crosswise of the plate and having their lateral
faces beveled, as shown in Fig. 3, and where the plate A is broken away in Fig. 2 the
"flare" being on the side of the plate that rests against the sash when the supporter
is in place. These slots are so placed as to receive the ends of the bearing-axles c¹,
and the ends of these axles where they rest in the slots are given the form of cones,
the sloping sides of which fit the bevels of the sides of the slots. Thus the frame
is held up to and firmly connected with the plate A, and is permitted to play across
or transversely of the plate A to a limited extent.
D is a curved or arched leaf-spring, which will be of steel by preference. The ends
of this spring rest on the cross-bearers between the side plates, b, of frame B,
between which the spring fits snugly to prevent rattling or looseness. In Fig. 1 one
of the plates is broken away to show the bearing of the spring on the cross-bearer b¹.
The arch of the spring at its middle stands under a stout overhanging lug, a², on the
plate A, through which is driven a thumb-screw, E, with a milled head or other form
of head adapted to be conveniently grasped between the thumb and finger. The tip e
of the screw is reduced in size and engages a hole in the spring at the middle of the
latter. Thus the spring is held against escaping from under the screw or slipping and
flying out when the screw is driven down upon it. The lug a² should be strong
enough to bear considerable strain.
Referring now to Fig. 4, it will be seen that one of my supporters (indicated in
Fig. as a whole by W) is placed at each side of the window and preferably at a
point about midway of the height of the sash S; but this not absolutely essential, and
the position of the supporter will properly vary somewhat with the size of the sash.
The plate A of the supporter rests upon the front face of the sash S, to which it may
be secured by screws. The edge of the plate A that is next the window frame T will
stand quite close thereto, and the rollers CC will press against and roll upon the
frame, being pressed up thereto by the spring D. The word "frame"
employed is meant to include not only the frame proper, but the strips and beads that
form the grooves in which the sash plays.
as here
In mounting the supporter on the sash it is best to slack up the tension of the spring D
by withdrawing the screw E. When the supporters are in place and screwed fast.
the thumb screw may be driven down upon the spring until the rollers C press with
sufficient elastic force against the window-frame. The elastic pressure in iny
supporter is due to the spring D, and not to any elasticity in the rollers themselves
The movement of the axles e' in the slots a' allows all the play of frame B on the
plate A that will be necessary.
By using a comparatively long frame B and mounting a roller C in same at each
end I obtain two bearings on the window frame at each side, and the bearings at eacl
side are a considerable distance apart. This serves to give the sash a steady
movement. The frame 13 may rock a little on the tip of screw E as a fulcrum, as the
screw is arranged midway between the rollers (. This construction permits all fou
of the rollers to bear firmly on the window-frame, even when the sash is very loosel
set in said frame. When the sash has been raised to the proper height, a single turn o
the screws E will clamp the rollers C firmly against the window-frame and hold th
sash in place.
My supporters are not "rights" and "lefts"-that is to say, it is not necessary t
construct them in pairs. This is an important feature in considering economy
construction and convenience of sale.
In reference to the tires of the rollers, I will say that they may be constructed b

page_text: covering a strip of canvas of the proper width with a film of unvulcanized rubber,
then wrapping this strip twice around the roller tightly, and then vulcanizing the
rubber while the tire is in place. Such a tire will not acquire flattened faces or facets.
from use.
If desired, the metallic parts of my supporter may be plated with nickel or silver.
When in place on the sash, the coned ends of the axles c do not project far enough
through the plate A to bear on the wood, as this would impede the movement of the
frame B. Should they project a little, however, the wood may be cut away at these
points.
Figs. 5, 6, and 7 illustrate my improved sash-supporter as mounted in a mortiše in
the edge of the sash S.
Fig. 5 shows the screw E as arranged in Figs. 1 to 3 bearing directly on the
spring D. After the supporter has been inserted in the mortise prepared for it, the
screw E is passed through a hole in the sash and scrowed through the lug a². This
construction is best suited for supporting the upper sash.
Fig. 6 shows the screw E with its axis arranged at right angles to that of the same
screw in the other figures. In this case the screw E screws through a nut-plato, a³,
secured to the face of the sash, and bears on a wedge-block, a, arranged in a suitable
guide or way, a, secured to or forming a part of plate A. The inclined face of this
wedge-block bears on and plays over the inclined face of a block, d, fixed to or forming
a part of spring D. The purpose of this device is of course to communicate the
movement of the screw E at right angles to spring D.
Fig. 7 merely shows how the supporter may be held in place in the mortise by
providing narrow end-mortises at g g to receive the projecting ends of plate A. These
ends should fit snugly in the mortises, so as to hold the plate tightly.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is-
1. In a sash-supporter, the combination, with the attaching plate, as A, of the
roller-frame, as B, mounted in guides on said plate; whereby it is connected to and
may slide on the latter, the rollers mounted in the ends of said roller-frame, the arched
spring resting at two points on said frame, and a thumb-screw, as E, for varying the
tension of said spring, said screw having its head exposed and convenient for
manipulation, as set forth.
2. In a sash-supporter, the combination, with the attaching-plate, as A, provided
with transversely-arranged slots, as a!, having beveled margins, of the roller-frame,
as B, its rollers C, and the axles, c' of said rollers, the conical ends of said, axles
projecting into and engaging the slots a!, thus forming-attaching devices and guides
for said roller-frame, and the spring, as, D, for pressing the rollers up to the
window-frame, as set forth.
3. In a sash-supporter, the combination, with the roller-frame and rollers, of the
Screw E, its nut-plate, the spring D, resting at two points on said roller-frame and
provided with a block, d, having an inclined face, the guide as, and the wedge-block a
in said guide and bearing on said block d, said screw bearing on said block a',
substantially as set forth.
Dated this 10th day of March 1888