Ax IM- PROVED CONTRIVANCE FOR HOLDING RAILWAY AND OTHER CARRIAGE WINDOW SASHES AND SHUTTERS; ALSO APPLICABLE TO OTHER SLIDING SASHES AND SHUTTERS
Year: 1871

page_text: LETTERS PATENT to Ebenezer Banton Burr, of Dalston, in the
County of Middlesex, Engineer, for the Invention of "Ax IM-
PROVED CONTRIVANCE FOR HOLDING RAILWAY AND OTHER CARRIAGE WINDOW
SASHES AND SHUTTERS; ALSO APPLICABLE TO OTHER SLIDING SASHES AND
SHUTTERS."
Sealed the 11th July 1871, and dated the 31st January 1871.
PROVISIONAL SPECIFICATION left by the said Ebenezer Banton Burr
at the Office of the Commissioners of Patents, with his Petition,
on the 31st January 1871.
I, EBENEZER BANTON BURR, of Dalston, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "AN
IMPROVED CONTRIVANCE FOR HOLDING RAILWAY AND OTHER CARRIAGE WINDOW
SASHES AND SHUTTERS; ALSO APPLICABLE TO OTHER SLIDING SASHES AND SHUTTERS,"
to be as follows, that is to say :-
The object of this Invention is a cheap and effective means for
enabling railway and other carriage window sashes and shutters to

page_text: be held in any desired position without rattling or shaking; also
applicable to other sliding sashes and shutters, and the Invention consists
in a contrivance or arrangement applied thereto for obtaining such
object.
To carry out my
Invention I fix in a suitable slot or groove in each
side of the sash or shutter (or it may be in the window frame) a piece
of india-rubber or other suitable elastic material against which rests a
wedge-shaped piece of wood or metal, the thin edge of the wedge
being placed downwards. Between the said wedge and the sash, shutter,
or window frame (as the case may be) is a similar wedge-shaped piece of
wood, or metal, or other suitable material, which, fitting against the
former described wedge, but with the thin edge upwards slides against
the window frame, sash, or shutter, as the case may be, one of the
wedges being furnished with a projection or pin working in a suitable
slot in the other wedge to regulate its travel. The outer wedge may be
attached to a slide bar of wood, or metal, or other suitable material or
combination of materials placed between the said outer wedge and the
window frame, sash, or shutter.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ebenezer Banton Burr in the Great Seal Patent
Office on the 31st July 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EBENEZER
BANTON BURR, of Dalston, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of January, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Ebenezer Banton Burr, Her special licence
that I, the said Ebenezer Banton Burr, my executors, administrators, and
assigns, or such others as I, the said Ebenezer Banton Burr, 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

page_text: Islands, and Isle of Man, an Invention for "AN IMPROVED CONTRIVANCE
FOR HOLDING RAILWAY AND OTHER CARRIAGE WINDOW SASHES AND SHUTTERS; ALSO
APPLICABLE TO OTHER SLIDING SASHES AND SHUTTERS," upon the condition
(amongst others) that I, the said Ebenezer Banton Burr, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and seals, 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 Ebenezer Banton Burr, do hereby
declare the nature of my 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 Drawing
hereto annexed and to the figures and letters marked thereon, that is to
say:
The object of this Invention is to provide a cheap and effective means
for enabling railway or other carriage window sashes and shutters to be
held at any desired height or position without rattling or shaking, thus
avoiding the use and expense of straps and buttons, and also avoiding
expense in the construction of the carriage door itself. It can also be
applied to any ordinary sliding window sashes or shutters, in which case
the sash weights, lines, and pulleys may be dispensed with.
To carry out my Invention I fix in a suitable slot or groove in each
side of the sash or shutter (or it may be in the window frame) a piece of
india-rubber or other suitable elastic material against which rests a
wedge-shaped piece of wood or metal, the thin edge of the wedge being
plated downwards. Between the said wedge and the sash, shutter, or
window frame (as the case may be) is a similar wedge-shaped piece of wood
or metal or other suitable material, which, fitting against the former
described wedge, but with the thin edge upwards slides against the
window frame, sash, or shutter, as the case may be, one of the wedges
being furnished with a projection or pin working in a suitable slot in the
other wedge to regulate its travel. The outer wedge may be attached
; to a slide bar of wood, or metal, or other suitable material or combina-
tion of materials placed between the said outer wedge and the window
frame, sash, or shutter.

page_text: To make my Invention better understood I will proceed to describe
the same by reference to the accompanying Drawing, in which Figures
1, 2, and 3 are sectional elevations, and Figure 4 a sectional plan of a
part of the side of a carriage window sash with my improved contrivance
for holding the same applied thereto, the various parts being shewn in
the position they occupy when the sash is being lifted.
in all the Figures represent similar parts.
Similar letters
I will first describe the arrangement as shewn in Figure 1. In a
suitable slot or groove in each side of the sash a, a, I fix the piece of india-
rubber or other suitable elastic material such as leather b, against which
I place the wedge-shaped piece of wood or metal c, the thin edge of the
wedge being placed downwards. This wedge I call the fixed wedge.
Against this fixed wedge I place a second and similar wedge d which I
call the travelling wedge, the thin end of which is placed upwards.
Attached to the travelling wedge d to increase the friction is the slip or
slide bar of wood e, e, or it may be made of other suitable material or
combination of materials; the outer side of this slide bar slides against the
window or sash frame h. A stud or projection fis fixed on the wedge c,
which stud projects into a slot or groove 9 in the wedge d, by which
means the travel of the latter is regulated, or the stud f may be fixed on
the wedge d and the slot g made in the wedge c. By this arrangement
if the sash a is placed in any position its weight will cause it slightly to
move downwards when the wedges c and d will slide against one another
until the india-rubber 6 is sufficiently compressed to jamb the slide bar e
against the frame h, the slot g being made of such a length as to allow
the wedge d enough travel to cause the slide bar to be pressed against
the frame sufficiently hard to hold the sash in its position and prevent
its rattling, but so that the pressure of the hand will be sufficient to
move the sash downwards. If the sash is raised the wedges moving in
the opposite direction to that hercin-before described will be relieved
from the pressure of the india-rubber and will allow of the sash being
easily raised. I prefer that the wedges c and d should be cut to an
angle of from eight to ten degrees, but they may be of any other suitable
angle.

page_text: The dotted lines shew the position of the wedges when the sash is being
pressed downwards.
It may sometimes be desirable from the weight of the sash to provide
an arrangement for adjusting the pressure of the india-rubber b. In
this case I fix on the india-rubber a metal plate j, Figure 3, and
employ two suitable screws with cams or eccentric ends k; the other
ends of the screws project from the sash so that they may be turned to
either increase or diminish by their cam ends the pressure of the india-
rubber and consequently the friction of the sash. In some cases the
slide bar e may be dispensed with and a spiral spring may be employed
instead of the india-rubber b. Where necessary two or more pairs of
wedges may be placed on each side of the sash.
My improved contrivance may, if desired, be placed in a slot or groove
in the window frame instead of in the sash, as herein-before described,
in which case the fixed wedge c resting upon the india-rubber b will be
placed with the thin edge upwards, and the wedge d with the thin edge
downwards. To improve the action of the wedges I can employ a
lubricant such as plumbago or French chalk, which I place between
them.
Having now described the nature of my said Invention and the manner
of performing the same, what I claim is, the employment of the friction
or travelling wedge d working in conjunction with the fixed wedge c,
in combination with the fixed elastic cushion 6 for holding sliding sashes
and shutters, substantially as herein-before described and referred to in
the accompanying Drawing.
In witness whereof, I, the said Ebenezer Banton Burr, have here-
unto set my hand and seal, this Thirty-first day of July, in the
vear of our Lord One thousand eight hundred and seventy-one.
30 Witness,
W. A. GILBEE,
4, South St.,
Finsbury.
EBENEZER BANTON BURR. (L.S.)