An Improved Arrangement for Lessening the Slamming of Doors and the like.
Year: 1885

page_text: An Improved Arrangement for Lessening the Slamming of
Doors and the like.
I, DOUGLAS ALLPORT, of 9 Fenchurch Bdga., London, Merchant do hereby
declare the nature of my invention for AN IMPROVED ARRANGEMENT FOR LESSENING
THE SLAMMING OF DOORS AND THE LIKE to be as follows:-
;
I propose to make use of a material which I will call india-rubber-tape. I prefer
to have this made with a canvas foundation & a thin layer of rubber. The tape
should be about half an inch wide, & projections of rubber at regular intervals of
say half an inch clear, are formed on its surface in the manufacture. For ordinary
doors these projecting pieces of rubber may be about to of an inch wide, to
tinch high, an inch long & rounded on the top. They are placed on the middle of
the tape, so as of a little more than 1th inch on each side.
To fix this material I have a small metal. (brass) plate, say 14 inch long by in:
wide (the usual width of the rebate into which a house door closes). At each end
of this plate is a screw hole, & in the centre a slot of similar size to the projections
on the tape. This plate being placed in position on the tape, with the rubber in
the slot, the length is cut off close to the ends of the plate. The two are then let
into the rebate of the door-way so as to leave the brass flush with the wood & the
rubber projecting through the slot to receive the impact of the door.
For railway carriage doors, the rebate being very narrow (t to in:) I propose
to use a plate of the reduced width, & having the opening for the rubber at the
side instead of in the middle, so that the rubber when fixed shall project in the
angle instead of in the centre of the rebate. The margin of tape on one side of
the projecting rubber has to be cut off in this case. The thickness of the brass
plate may vary according to the quantity of rubber it is desired to use.

page_text: COMPLETE SPECIFICATION.
An Improved Arrangement for Lessening the Slamming of
Doors and the like.
I DOUGLAS ALLPORT of 7 St Benet Place London & late of 9 Fenchurch
Buildings London Merchant do hereby declare the nature of my invention for
AN IMPROVED ARRANGEMENT FOR LESSENING THE SLAMMING OF DOORS & THE
LIKE and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
I propose to make use of a material which I will call india rubber tape. This
consists of a flat strip of india rubber, preferably upon a textile foundation,
& having protuberances formed in the manufacture upon its surface.
Lengths of this tape are let into recesses cut in the stop of the door in such a
way that the protuberances take the blow when the door is closed. I prefer to
secure these lengths of tape by means of small plates of metal or other material,
covering the flat part, but allowing the protuberances to project thro slots made for
the purpose. These plates may be of any convenient thickness, & lie in the before-
mentioned recesses flush with the wood of the door stop & secured by screws
passing thro' them & the underlying tape. The latter may be of any convenient
thickness & the projections of any preferred shape or height according to the
severity of the concussion it is intended to relieve. I have found that projections
about 1 inch long & divided into pyramids about inch square, rounded or
flattened on the top & the of an inch high are generally effective & from their
shape allow of considerable depression. The accompanying drawings show some
of the sizes & shapes I have found useful.
Figs. 2 & 9 show two forms of india rubber tape the first being intended for
doors & the second for the bottom of sash windows & the feet of furniture. Figs. 3.
7 & 8 are brass plates for securing the tape, No 7 being adapted for a tape of
double length, & secured by 3 screws. Nos. 1. 4. 5. 6 & 10 show the plates of
several patterns with the rubber tape in position for fixing. No 1 is a modification
of Nos. 2. 3. & 4 inasmuch as the plate has a flange, thro which the screws may be
passed instead of thro' the top.. Nos. 5. 6 & 7 are suitable for doors having a
narrow rebate, & they may be used with the rubber projections either in the angle
of the rebate or on the outside next the door. Nos. 1 & 7 (or a combination
of the two) are suitable for railway & other carriage doors, & generally these
buffers are advantageous wherever they can be fitted to lessen the concussion of
surfaces when brought together.
I claim
E

page_text: 2. The division of the protruding rubber into two or more separate projections of
pyramidal or conical or other allied shape, in such a manner that the spaces
between the projections allow for distortion of the rubber as distinguished from
compression.
3. The method of securing the tape in position by means of slotted plates of
metal or other material, substantially as described.