Improvements in Sash-weights.
Year: 1891

page_text: Date of Application, 10th Nov., 1891
Complete Specification Left, 10th Aug., 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Sash-weights.
I, THOMAS SMITH of 281' Burdett Road, Limehouse, London E., Ironfounder,
do hereby declare the nature of this invention to be as follows:-
My invention relates to an improvement in constructing sash-weights whereby
the following advantages are secured viz. :-
1st. Cheapness in manufacture.
2nd. Involving no skilled labour in jointing.
3rd. Impossibility of becoming detached and non-liability to become loose or
break when in use.
4th. Less room occupied, in proportion to weight, and facility of altering the
weight by linking the weights together in separate pieces.
I cast the sash weights in separate lengths, the upper length having the ordinary
eye at one end for the sash cord and at the other end cast with a double eye-having
sunk recesses opening through one side to receive corresponding outside projections
upon a single eye cast on the upper end of the next length the succeeding lengths
being cast in the same way so that when linked to each other they form a hinge
jointed chain of weights which, when in the window box, cannot become detached
from each other. To facilitate moulding and fitting together, the projections upon
one weight are preferably circular, like rivet heads, and the recesses to receive them
are similarly formed.
'ITTITATS STATOILI
SYWOHL
COMPLETE SPECIFICATION.
Improvements in Sash-weights.
I, THOMAS SMITH, of 281 Burdett Road, Limehouse, London, E. Ironfounder,
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 improvements in the construction of sash-weights.
According thereto I make each sash-weight in separate lengths, the upper length
having the ordinary eye at one end for the sash cord and at the other end a double
eye having sunk recesses opening through one side to receive corresponding outside
projections upon a single eye cast on the upper end of the next length, the
succeeding lengths being cast in the same way so that when linked to each other
they form a hinge jointed chain of weights which, when in the window box or
casing cannot become detached from each other. To facilitate moulding and fitting
together, the projections upon one weight are preferably circular, like rivet heads,
and the recesses to receive them are similarly formed.
The accompanying drawing shows to about half the actual size, three lengths of
a sash-weight constructed according to my invention.
Figs. 1 and 1 are respectively an elevation and plan of the upper length of the
sash-weight in which the cord is secured through the hole H at top and at the
bottom end is a double eye E opening from one side of which is a recessed cavity C
as shown in the sectional side view Fig. 2. Into this cavity the top end of the
next length of the sash-weight (Figs. 2, 2B) is inserted at a and seats itself at b the
projections P being then locked and forming a hinged joint. The next or lower
length of the sash-weight, Fig. 3 is similarly jointed to the one above.
Fig. 4 shows a perspective view of the hinged joint between two of the lengths.
The several lengths may advantageously be made square in cross section.
מ

page_text: The construction of sash-weights in jointed lengths enables the required balance
for a window sash to be readily adjusted; the lengths can be readily inserted in
the casing, and, when in position, they cannot become detached and are not liable
to get foul of and stick in the casing as are ordinary weights, while there are no
hinge pins to work loose. Furthermore no machine work, nor fitting requiring
skilled labour is required, the castings being ready for joining together as they
come from the mould.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed. I declare that what I
claim is :-
A sash-weight constructed in a number of separate lengths or parts adapted to
be readily hinged or jointed together without loose pins or other fittings and without
being machined substantially as described and shown.
Dated this 10th day of August 1892.
T. SMITH,
Per L. W., per W. C.