A NEW AND IMPROVED APPARATUS FOR HOLDING WINDOW SASHES OR SHUTTERS
Year: 1870

page_text: ¸LETTERS PATENT to Henry Bickerton Greenwood, of Welwyn, Hertford-
shire, for the Invention of "A NEW AND IMPROVED APPARATUS FOR
HOLDING WINDOW SASHES OR SHUTTERS."-A communication from abroad
by Mr. Samuel Lewis Loomis, of South Byron, Genesee County,
State of New York, United States of America.
PROVISIONAL SPECIFICATION left by the said Henry Bickerton
Greenwood at the Office of the Commissioners of Patents, with his
Petition, on the 17th May 1870.
I, HENRY BICKERTON GREENWOOD, of Welwyn, Hertfordshire, do
hereby declare the nature of the said Invention for "A NEW AND
IMPROVED APPARATUS FOR HOLDING WINDOW SASHES OR SHUTTERS," to be as
follows:-
It consists in inserting a traversing slide or slides made of wood,
metal, or other suitable material between the sash or shutter and the
window frame, bead, or stop, such slide or slides pressing against elastic
rollers, discs, or balls placed in bevelled slots or hollow wedge-shaped
J

page_text: recesses cut in the frame, bead, or stop in such a manner as that when
the sash or shutter is raised the clastic rollers, discs, or balls being
influenced by the traversing slide or slides are rolled into the upper and
widest parts of the slots or recesses; but when the sash or shutter begins
to descend the elastic rollers, discs, or balls are by the force of gravity 5
and compression of the slides rolled downwards into the lower and
narrower parts of the slots or recesses, and force the traversing slides
against the sash or shutter. By the friction so produced the sash or
shutter is retained at any desired height.
Where necessary or preferable I place the clastic rollers, discs, or balls 1
in bevelled slots, recesses, or notches cut in the traversing slide or slides
instead of in the sash frame, bead, or stop, in which case it may be
sometimes advisable to arrange the slide in a groove cut in the sash
frame, bead, or stop.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Bickerton Greenwood in the Great Seal
Patent Office on the 16th November 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
BICKERTON GREENWOOD, of Welwyn, in the County of Hertfordshire,
send greeting.
"
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeeth day of May, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Ier heirs and successors,
give and grant unto me, the said Henry Bickerton Greenwood, Her :
special licence that I, the said Henry Bickerton Greenwood, my
executors, administrators, and assigns, or such others as I, the said
Henry Bickerton Greenwood, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "A NEW AND IMPROVED APPARATUS FOR HOLDING WINDOW
SASHES OR SHUTTERS," being a communication to me from Mr. Samuel
Lewis Loomis, of South Byron, Genessee County, State of New York,

page_text: United States of America, upon the condition (amongst others) that I,
the said Henry Bickerton Greenwood, my executors or administrators,
by an instrument in writing, under my, or their, or one of their hands
and scals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Henry Bickerton Greenwood, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Drawings forming part of this Specification :-
The object of my Invention is to support a window sash or shutter at
any desired clevation to prevent rattling or shaking of the same, and to
exclude dust, rain, and draught. This I effect by means of a traversing
slide or slides or rods inserted between the window sash or shutter and
the window or shutter frame, bead, stop, or jamb, and resting or pressing
against elastic rollers, discs, or balls contained in bevelled slots or hollow
wedge-like recesses formed in the frame, bead, stop, or jamb, or sash, or
shutter (or by means of the window sash or shutter being made to press
against elastic rollers, discs, or balls contained in bevelled slots or*
hollow wedge-like recesses cut or formed in the traversing slide inserted
as before described) in such a manner as that the weight or gravity
of the sash or shutter acting upon the elastic rollers, discs, or balls,
either directly by pressing the elastic rollers, discs; or balls against the
traversing slides, or indirectly by pressing the traversing slides against
the elastic rollers, discs, or balls shall influence the elastic rollers, discs,
or balls into the narrow parts of the bevelled slots or hollow wedge-like
recesses. The pressure or friction caused thereby overcoming the
natural gravity of the sash or shutter, it is held at the elevation desired
until additional force is exerted to overcome the effect of the pressure or
friction.
-
The traversing slides or rods may be of any requisite number, may
be constructed of wood, metal, or other suitable material, and may be
made of any requisite length, thickness or breadth, and may be prevented
traversing beyond the distance requisite to produce the necessary amount

page_text: of friction by means of pins, screws, or other appliances placed in
convenient position.
The elastic rollers, discs, or balls may be constructed of india-rubber
or other suitable elastic material, and may be made of any requisite
length, diameter, or conformation. The bevelled slots may be lined or 5
covered with or made of brass or other metal, and may be formed in or
let into the window frame, bead, stop, jamb, or sash, with the narrower
part downwards or upwards as location may require.
In further explanation and illustration of my Invention I refer to the
accompanying Sheet of Drawings forming part of this Specification.
Figure 1 represents my Invention inserted in the jamb or frame;
Figure 2 represents the same inserted in the stop or bead. Letters of
like name and kind indicate like parts in each Figure.
In Figure 1, A is the bevelled slot cut in the jamb or frame C; Bis
the bead or stop partly broken out to shew the sash D pressing E, the 1
traversing slide against E the elastic disc contained in the bevelled
slot A. fis an adjusting screw or pin placed so as to prevent the slide e
from traversing too far and thus producing too much friction.
In Figure 2, A is the bevelled slot cut in the bead or stop B, the outer
surface of which is cut away to shew E, the traversing slide between E 2
the elastic roller in the bevelled slot and D the sash.
Figure 3 is a side clevation of the traversing slide e formed after the
pattern I prefer to use in this application of my Invention, made of sheet
brass, iron, or tin, and slotted so as to admit the action of the pin or
screw f. Figure 4 is a front elevation of the traversing slide; Figure 5 2
is a transverse section of the same at the dotted line in Figures 3
and 4.
In certain cases it may be preferable to insert in the sash frame or
bead a casting of metal provided with the bevelled slot.
Figure 6 is a side elevation of the form of casting which I prefer to 3
use. A, the bevelled slot formed in the casting K, part of the surface
of which is depressed between the dotted lines so as to admit the action
of the slide e, and notched at M to allow the insertion and action of
pin f. When the sash is raised the slide being carried upwards with it
by friction will react upon the elastic roller and influence or press it 3
into the wider part of the bevelled slot, where it will remain without
10

page_text: T
appreciable action so long as the sash is being raised. But when the
sash begins to descend by its own gravity or otherwise it will by friction
carry with it the slide, which reacting upon the elastic roller will cause
it to roll and compress it into the narrower part of the bevelled slot, the
friction being thereby gradually increased until it overcomes the gravity
of the sash and holds it firmly at the desired elevation until pressure is
applied sufficient to overcome the friction.
Figure 7 is a front elevation of part of a sash with my Invention
applied to the side thereof, the elastic rollers or balls being in this case
inserted in the bevelled slots cut or formed in the traversing slide. E, E,
are the clastic rollers placed in the bevelled slots A, A, cut in the
traversing slide c. I prefer in this case that the traversing slide should.
work in a groove cut in the side, front, or edge of the sash to keep it in
proper working position. C is the window frame or jamb;. B, the bead
or stop partly broken out to shew D, the sash, which is partly cut away
in order to shew E, the traversing slide with the clastic rollers or balls
E, E, in the bevelled slots A, A, cut or formed in itself; h is a pin, the
head of which projects into a small groove or mortise cut in the slide;
its purpose
iš to prevent the slide falling out when the sash is removed
from the frame.
Figure 8 is a side elevation of the sash with the traversing slide E
described in Figure 7 in position in the groove cut in the side of the
sash. is an adjusting screw placed below the traversing slide and
working through a metal plate g. The purpose of this adjusting screw
is to limit the action of the traversing slide to the necessary distance so
as to avoid too much friction being produced. When the sash is raised
the elastic rollers or balls E, E, will be influenced or rolled into the
under part of the bevelled slots formed in the traversing slides and no
appreciable resistance to upward movement will ensue; but when the
sash begins to descend by its own gravity or otherwise it will by its
pressing against the clastic rollers or balls influence and compress them.
into the narrower parts of the bevelled slots, thus forcing with increasing
pressure the traversing slide against the jamb or frame until the amount
of friction produced thereby overcomes the gravity of the sash, and thus
holds it at any desired elevation until force is applied sufficient to over-
come the aforesaid friction.
What I claim as my Invention is the employment of a traversing slide
or slides, rod or rods, working in conjunction with loose elastic rollers,

page_text: discs, or balls (contained in bevelled slots or hollow wedge-like recesses)
between the window sash or shutter and the frame, jamb, bead, or
stop thereof in the manner and for the purpose herein set forth and
described.
In witness whereof, I, the said Henry Bickerton Greenwood, have a
hereunto set my hand and seal, this Sixteenth day of November,
in the year of our Lord One thousand eight hundred and
seventy.
Witness,
CH'. A. COMYN.
HENRY B. GREENWOOD. (L.S.)