Improvements in Cellar Flaps
Year: 1896

page_text: Date of Application, 22nd Oct., 1896
Complete Specification Left, 16th Dec., 1896-Accepted, 6th Mar., 1897 :
WILLIAM ECHSTEIN and JOHN ALFRED WILLMORE Engineers both of
187 Union Street Borough in the County of London do hereby declare the nature
of this invention to be as follows:-
Our invention relates to a means by which the large and heavy iron & glass
cellars flaps now so much in use can be readily opened and closed with a minimum
risk of breakage.
It consists in attaching to each flap by a suitable hinge or pivot a rack, which
rack requires to be of a peculiar form as shown in drawing, this rack passes through
a guide box attached to the frame in which the flaps are hinged & in this box is
mounted a worm which gears into the rack so that by rotating the worm the rack
& its flap are raised or lowered-the worm is made with a cross or tee piece at its
lower end on to which a long rod hooks-the lower end of this rod is cranked &
by this means the gear can be worked from the floor of the room above which the
flaps are placed.
In the accompanying drawings A A are the flaps, B. B the curved racks attached
to the flaps by the pivots C. C: D. D are the guide boxes which contain the
worms E, E, & guide & take the thrust of the racks B. B.
FF are the tee ends of the worms, & G is one of the cranked rods in position for
working the gear.
Dated this Twenty-first day of October 1896.
W. ECHSTEIN.
J. A. WILLMORE.
Improvements in Cellar Flaps.
WILLIAM ECHSTEIN and JOHN ALFRED WILLMORE Engineers both of
187 Union Street Borough London S.E. 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:-
Our invention relates to a means by which the large & heavy iron and glass
cellar flaps now so generally in use can be readily opened and closed with a minimum
risk of breakage.
It consists in attaching to each flap by a suitable hinge or pivot a rack, which
rack requires to be of a peculiar form as shown in drawing, this rack passes through
a guide box attached to the frame in which the flaps are hinged and in this box is
mounted a worm which gears into the rack so that by rotating the worm the rack
and its flap are raised or lowered.
The worm is made with a cross or tee piece at its lower end on to which a rod

page_text: having a hooked end engages, the lower end of the rod is cranked and by this means
the gear can be worked from the floor of the room over which the flaps are placed.
Referring to the drawings left with the Provisional Specification; A, A, are the
flaps B B the curved racks attached to the flaps by the pivots C C.
DD are the guide boxes which contain the worms E E and guide and take the
thrust of the racks B. B.
FF are the tee ends of the worms and G is one of the portable hooked and
cranked rods in position for working the gear.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
The use of curved racks and worms working in a box which serves as a guide
for the rack for the purpose of raising and lowering heavy cellar flaps substan-
tially as described and illustrated.
W. ECHSTEIN.
J. A.. WILLMORE.