Year: 1886

page_text: Date of Application, 14th Oct., 1886.
Complete Left, 27th May, 1887.
Complete Accepted, 26th July, 1887.
We, WILLIAM BURNETT, 20 Watson Street Dundee, Carpenter, & DAVID PETRIE
115 Victoria Road, Dundee, Clerk, do hereby declare the nature of this invention to
be as follows
--
An improved method of fastening or suspending sliding sashes so as to dispense
with the use of leather belts, cords, weights & pulleys, It is applicable to the sashes
of Windows and to the sliding Sashes of Railway or other carriage doors. The lock
or holder consists of a circular piece of leather enclosed in a triangular shaped recess,
and so placed that the edge of the leather acts on the groove or case in which the sash
slides. When the sash is being lifted, the leather remains in the bottom or wide
part of the triangular recess, and allows the sash to be easily lifted, When raised to
the desired position and let go, the leather immediately jams itself into the apex of the
recess and presses with sufficient force against the case so as to prevent the sash from
falling. There is a backing of india rubber in the triangular recess for the purpose of
equalizing the resistance in closing the sash, and by means of a pinion & sliding
ratchet, acted upon from without by a key, the pressure of the leather button or wheel
against the case of the sash can be regulated at will.
WILLIAM BURNETT.
DAVID PETRIE.

page_text: An Improved Means for Fixing or Suspending Sashes.
We, WILLIAM BURNETT, 20 Watson Street, Dundee Carpenter & DAVID PETRIE,
115 Victoria Road Dundee, Clerk, 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:-
The object of this invention is to provide a better means of sustaining the sliding 5
or lifting sashes of carriage doors at any desired height or position. According to
our invention we insert into a mortise or cavity cut into sash two or more metal
boxes open at one or both ends, secured in position by screws, so placed that the
opening into the box will be faceing the groove into which sash works up and down
Into the bores are fitted a bolt, or sloped piece considerably shorter than length of box,
this slope is pushed into box past the flush until it comes into contact with an excentric
said excentric being constructed upon a small spindle passing through the sides of
boxes. Into end of spindle I form slot to receive screw-driver so that by turning the
spindle in the required direction, the slope will be forced out again slightly so as to
be nearer flush with opening-The end of bolt faceing groove into which sash works
is cut off at an angle so that it is considerably nearer flush with end of box at top side
than it is at bottom side. Into box after slope is in we insert a disc made of leather or
other suitable material about same thickness as slope but considerably less in
diameter than height of box and projecting out of box far enough to make it just
touch groove into which sash works. It will thus be seen that sash can be easily
raised to the desired height without bringing the apparatus into operation, but that it
will prevent the weight of sash from causing sash to descend, as the least downward
motion will make this leather disc to travel up the angle increasing its projection, and
thereby jamming sash which can only now be lowered with considerably extra
pressure Should the leather disc become through use too small a slight turn of
excentric spindle will force slope outwards, diminishing space disc has to work in,
and causing to jam more readily. In order that Invention may be the more readily
understood we have annexed drawings.
(a) Represents box with cover off.