IMPROVEMENTS IN WINDOW SASH SUPPORTERS
Year: 1878

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN WINDOW SASH
SUPPORTERS." A communication from abroad by Asarah Ryder, of Toronto,
in the Dominion of Canada, Gentleman.
. Sealed the 11th March 1879, and dated the 17th September 1878.
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 17th September 1878.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVE-
MENTS IN WINDOW SASH SUPPORTERS." A communication from abroad by Asarah
Ryder, of Toronto, in the Dominion of Canada, Gentleman.
The improvements consist in substituting for the balance weights now used a
spring contained within a cylindrical case centrally pivotted on a stationary spindle
held in a bracket formed to receive it. The centre end of the spring is fitted into a
longitudinal slot in the spindle, and its outer end attached to the periphery of the
cylindrical case. One end of a metallic tape of a suitable length is similarly:
attached to and wound round the periphery of the case, the other end is provided
with a buckle or clip secured to the window sash, the whole being arranged in such
a manner that the weight of the sash will be sustained by the spring.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Herbert John Haddan in the Great Seal Patent Office on the 13th
March 1879.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer.
" IMPROVE-
MENTS IN WINDOW SASH SUPPORTERS." A communication from abroad by Asarah
Ryder, of Toronto, in the Dominion of Canada, Gentleman.
Figure 1 illustrates the application of my regulation to a window sash.
Figure 2 is a detail of the clip used for connecting the metallic tape to the
window sash.
Figure 3 is a plan of the bracket.
Figure 4 is a sectional detail of this bracket case and spindle.
The object of the Invention is to provide suitable substitute for weights now
commonly used to balance window sashes, and consists in a clock spring contained
within a cylinder case centrically pivotted on a stationary formed disc held in a
bracket specially formed to receive it.
The centre end of the clock spring fits a longitudinal slot in the spindle referred
to, and its outer end is attached to the periphery of the cylindriform case; one end
of a metal tape of suitable length is similarly attached to and wound around; the
periphery of the other end provided with a buckle which is received as shewn in
the Drawings of the window sash, the whole being arranged in a manner that the
weight of the sash be sustained by the spring.
With the view of clearly defining the extent of my Invention I may say that
the application of a clock spring for the purpose of supporting a window sash is
not in itself new, but owing to the needlessly expensive construction, clumsy
formation, and flimsy attachments no device has yet been successfully introduced
into the market.
In my Invention I make the bracket A of malleable or cast iron, and having the
ends of its base plates round, as shown; the jaws A¹ of the bracket are gracefully
formed, and the slotted bearings B cut in them are the proper size to receive the
squared or flattened ends of the spindle c; the main diameter of the spindle_c
should not be less than half an inch, as a suitable spring can then be more easily
attached to it.
The inside end d of the clock spring D is bent in towards the end of the said
spring, forming the connections between it and the spindle c by entering the slot c¹
on the said spindle.
The spring D fits into the cylindrical case E, having a slotted opening e into
which the outside end of the spring D fits; so does also the end g of the metallic
tape G, the other end of which is provided with a buckle or clip F applied for the
purpose of connecting the metallic clip to the window sash.
Having inserted the spring D and spindle C into the case E, and adjusted these.
within the bracket A, I wrap the metallic tape G around the case E, to which it is
also connected.
The regulator is now ready for application, and can in this form be sold to the
trade. The friction roller H with the ferrule I is also marketable in the shape it is
shewn in Figure 1.
The window sash J is cut out to receive the regulator, which is inserted as shewn
in Figure 1 referred to, and placed at or about the centre of the window frame.
The tape G is wrapped around the case E, and the clip F is screwed to the bottom
of each sash, as shewn in Figure 1, so that the weight of the sash is supported by
the strength of the spring, and as the sash is moved the case revolves and the case
unwinds.
What I claim as my Invention is,―
1st. The bracket A with the base plate having rounded ends and gracefully
formed jawsA¹ with slotted bearings B in connection with the stationary spindle C,

page_text: clock spring D, and cylinder formed case E, substantially as and for the purpose'
specified.
2nd. The spindle C having a longitudinal slot to receive the end d of the
spring Din combination with the cylinder formed case E, having a slotted opening e
to receive the end of of spring D and end g of the tape G, substantially as and for
the purpose specified.
3rd. The friction roller H held in the ferrule I and let into the stile J, as shewn
in Figure 1, for the purpose of permitting sash K to work easily within the window
frame.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Thirteenth day of March, A.D. 1879.
H. J. HADDAN. (L.S.)