An Improved Door Closing Apparatus.
Year: 1890

page_text: Date of Application, 24th Apr., 1890
Complete Specification Left, 26th Jan., 1891-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
An Improved Door Closing Apparatus.
I, CHARLES JAMES ORR, of 12, Rutland Square, Edinburgh, in the County
of Midlothian, North Britain, Gentleman, do hereby declare the nature of this
invention to be as follows:-
This invention relates to an improved door closing apparatus, and has for its
object to dispense with the usual springs at present employed for the purpose of
automatically closing doors after they have been opened.
In accordance with my invention I employ a weight in lieu of the present spring
and I mount the said weight and its attachments in any suitably made recess under
or within the flooring immediately below the end of the door at the hinged side
thereof. The weight which I employ may be of lead and other heavy metal and
it is fixed eccentrically, or in an equivalent manner for the purpose of my invention,
upon a short horizontal spindle, the mode of mounting the weight being such that
when the spindle is partially rotated in one direction by the action of opening the
door, it lifts up the weight from its centre of gravity or position of rest, so that the
weight automatically turns the spindle back again, and by this arrangement brings
the door with it to its normal position of being shut. I may employ any suitable
mechanism for the purpose but preferably I key a beveled pinion upon the spindle
carrying the weight, the said pinion gearing with a corresponding pinion keyed
upon an upright spindle, the top of which is formed square to fit into the bottom
of the door, the said part of the door being provided with. a small brass or other
metal plate into which the top of the spindle fits.
My invention is also applicable to swing doors, and with such and also with
ordinary doors, the door can be retained automatically in its full open position.by
so arranging the weight that it is brought into a position of rest, such as being
balanced immediately below the spindle which carries it.
1 1000
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
An Improved Door Closing Apparatus.
I, CHARLES JAMES ORR, of 12, Rutland Square, Edinburgh, in the County
of Midlothian, North Britain, Gentleman, 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 :—
This invention which relates to an improved door closing apparatus has for its
object to dispense with the usual springs at present employed for the purpose of
automatically closing doors after they have been opened.
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the
accompanying drawings. Figure 1 of which is an elevation of a part of a door
having my apparatus attached, and Figure 2, is an end elevation of same.
In carrying out my said invention with reference to an ordinary swing
door A, I employ a lead or other heavy metal weight B, in lieu of the
present spring, the said weight and its connections being mounted in a recess
under or within the flooring C, immediately under the end of the hinged or
pivoted side of said door A. The said weight B, is preferably of a shape
as shown and is adjustably mounted eccentrically or in an equivalent manner, on a
Price G21

page_text: short horizontal spindle b, in such a manner as to be lifted up from its centre of
gravity or position of rest by the opening of the door, which on being let free is
again closed by the said weight. The mechanism I employ to effect this is preferably
as follows mount a bevel spur pinion or wheel D, on the end of the weight's
spindle b, which gears into another bevel spur pinion or wheel E, mounted on the
lower end of an upright spindle e, having its top end e¹, formed-square so as to fit
into a square hole formed in a suitable bottom plate a, secured to underside of said
door A, or it may be into the door; the said spindle è may also be provided with
an adjusting pinching screw F, which may if desired be provided with jam nuts, or
the spindle's end may be screwed and provided with jam nuts at its lower end so as
to enable the position of the weight B, being regulated as desired; the whole of
said spindles, bevel wheels, and weights being carried in a suitable metal frame G
which may be fixed to the flooring C, by any suitable means. The said door A, is
also provided with a top pivot H, the rounded end of which works in a suitable hole
formed in a top plate a', secured to top of door, or it may be in the door, or in both,
and the arrangement is also such that when the door is full open it may be kept so
by the weight being immediately over the top of its spindle and therefore balanced,
that is to say in a position of rest. My said invention is also applicable to ordinary
hinged or other doors, as well as swing doors; and if desired by altering the position
of the weight, B, on its spindle b, the said door A, may be caused' to remain in any
desired position such as half or full open.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. In an automatic apparatus for closing doors after they have been partially
opened; or for keeping such doors full open the employment of a weight, substan-
tially in the manner as hereinbefore described and shown in the accompanying
drawings.
2nd. The general arrangement, construction and combination of the various
parts constituting my improved door closing apparatus, all substantially and
for the purposes as hereinbefore described and shown in the accompanying
drawings.
Dated this 23rd d. f IABLOY
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.