Improvements in Thresholds.
Year: 1898

page_text: Date of Application, 28th Mar., 1898-Accepted, -20th May, 1898.
UUMI LEID
Improvements in Thresholds.
We, GEORGE ADDISON SEELY, Carpenter, and JOHN HENRY GODDEN, Marble Cutter,
both of Emmetsburg, County of Palo Alto, State of Iowa, United States of America,
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 :-
J
This invention relates to improvements in thresholds or door-sills; and it consists,
essentially, of a specific adjustable section and also of the details of 'construction and
arrangement of parts which will be more fully hereinafter described and claimed.
The object of the invention is to raise or lower the threshold at either end during
certain seasons of the year to obviate the binding on the under side of a door, which
arises from settling or heaving of walls, owing to changes in the weather and for
other reasons.
In the accompanying drawings, Figure 1 is a sectional perspective view of a
threshold or door-sill embodying the invention. Fig. 2 is a central longitudinal
vertical section of the device. Fig. 3 is a detail perspective view of the adjustable
attachment removed. Fig. 4 is a detail view of a modification of the box.
Referring to the drawings, wherein similar numerals of reference indicate
corresponding parts in the several views, the numeral 1 designates a box substantially
of rectangular form and open at the top. The said box has oppositely-projecting
flanges 2 and 3 extending from the upper edges thereof at right angles and has the
bottom thereof formed with suitable screw-seats 4 to receive the screw-threaded ends
of adjusting-screws 5, having heads rotably mounted in and exposed through an
adjustable section 6, which is formed with inclines 7, extending from a central curved
ridge 8.
Under the ridge and extending through the upper unscrew-threaded
portion of the screw or bolt 5 is a pin, 9, extending from opposite sides and having
the ends thereof bent down to prevent the withdrawal of the screw or bolt upwardly
through the curved ridge 8, and prevents the said adjustable section from moving
downwardly beyond a predetermined point. The adjustable section also has depending
flanges 10, which fit into and bear against the sides of the box 1, and in placing the
device in position is so situated that it will centre with the bottom of the door, which
is to coact therewith, and if the device should conflict in any way with the construction
of the door-framing it can be readily positioned by slightly cutting away the
resisting parts, and in operation the movable section is raised to an elevation desired
to take up the space between the bottom of the door and the same, and if the door
binds at any point the movable section can be correspondingly lowered.
The material of which the two parts are to be constructed is malleable iron or
analogous substance, which will resist wear; and in the bottom of the box a series of
openings '11 are found to permit water which may run into said box to freely pass
away.
The device is adapted to be employed either with inside or outside doors, and in
the case of ordinary doors two adjusting screws would probably be sufficient.
However, the number of the adjusting screws employed will be regulated in

page_text: accordance with the size of the door, and the device forms a very excellent sill or
threshold for double doors. At one side of the box, as shown by Fig. 4, in
connection with the flange 3 thereof, a dip-flange 12 is shown, which is adapted to
be employed in connection with the box when the latter is used at certain points.
This, however, can be readily dispensed with and will not affect the operation or the
construction generally of the device as presented.
It is obviously apparent that many minor changes in the construction and
arrangement of the several parts might be made or substituted for those shown
and described without in the least departing from the nature or spirit of the
invention.
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
1. In a threshold or door-sill of the character set forth, the combination of a
box provided with vertical sides and upper horizontal flanges and having a movable
section mounted therein, with a closed top and depending sides coacting with the
vertical sides of the said box and adjusting-screws connecting said movable section
and box and adapted to be operated from the top of the movable section, substantially
as and for the purpose specified.
2. In a threshold or door-sill of the character set forth, the combination of a box
provided with upper horizontal flanges and having screw-seats at regular intervals
therein, and openings through the bottom thereof, a movable section mounted in said
box, adjusting screws or bolts having their heads exposed through the upper part
of said movable section and engaging the screw-seats of the said box, and stops for
said adjusting screws, substantially as and for the purpose specified.
Dated this 28th day of March 1898.