Improvements in and in connection with Door Closing Apparatus.
Year: 1890

page_text: Date of Application, 10th Sept., 1890
Complete Specification Left, 10th June, 1891-Accepted, 10th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in and in connection with Door Closing
Apparatus.
I, JAMES ADAMS of 7, Union Street Borough, Engineer, do hereby declare the
nature of this invention to be as follows:-
My invention relates to that class of spring which is applied to swing doors.
In a box sunk into the floor or sill of the door in the usual manner I place a
pivot by which the door is turned. On this pivot I form a lever to which is
attached one or more rollers or wheels. This lever on the pivot is acted upon by
other levers connected with a spring or springs in such a manner that when the
door is closed the power of the spring or springs is greater upon it than when it
is open. The spring or springs are made to work on a fixed pillar bearing.
This apparatus also contains arrangements for regulating and adjustments.
When applying the check action I use a cylinder and an intermediate lever so
arranged that as the door closes an accumulated speed is conveyed to the piston of
the cylinder.
Dated this Tonth day of Santambon 1200
COMPLETE SPECIFICATION.
Improvements in and in connection with Door Closing
Apparatus.
1 JAMES ADAMS of 7 Union Street Borough Engineer 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 that class of spring which is applied to swing doors.
In a box sunk into the floor or sill of the door in the usual manner I place a
pivot by which the door is turned. On this pivot I form a lever to which is
attached one or more rollers or wheels. This lever on the pivot is acted upon by
other levers connected with a spring or springs in such a manner that when the
door is closed the power of the spring or springs is greater upon it than when it is
open. The spring or springs are made to work on a fixed pillar bearing.
This apparatus also contains arrangements for regulating and adjustments.
When applying the check action I use a cylinder and an intermediate lever so
arranged that as the door closes an accumulated speed is conveyed to the piston of
the cylinder.
These improvements produce a shallow well door spring hinge.
In the description of the drawings the same letters show like parts.
Fig. 1 plan of the box a containing the following apparatus the pivot on which
the door turns. c the pivot lever carrying a friction roller d. This fever c is acted
upon in opposite directions by the levers e e. connected with a scroll spring or
springs and barrel g. The spring barrel g works on the pillar bearing this
bearing being fixed in the box. The box also contains the pivot bearing i. bolted
to its side and adjustment screws j. j for the levers e e.
When the door is turned one way one of the leverse attached to the spring is
carried from its position of rest thus winding the spring. On being free the door is
returned by the lever or spring again to its normal position.
631...מ

page_text: When the door is turned the other way the door acts on the opposite levere and
is returned again as before. The opposite movement is produced by the levers ee
one being attached to the centre the other to the outside of the scroll spring or
springs. This is done as shown in Figs. 9 and 12.
Fig. 2 sectional elevation of Fig. 1.
Fig. 3 plan with attachment to a check movement. For this purpose I apply
another friction roller & that nets on the lever 1, is pivotted at m and is connected
to a piston n. This piston works in the cylinder o which is pivotted at p the check
being controlled by a screw r.
When the door is opened either way the piston is actuated and on returning to
its normal position the check comes into action. is a partition to prevent lubricant
passing to the check or cylinder part.
Fig. 4 sectional elevation of Fig. 3. showing how the check action is connected
to the pivot lever.
Fig. 5 plan showing the application of Fig. 1 to a door swinging one way only.
On the pivot form a radial arm which is acted upon by a jointed lever e
connected to the scroll spring. The lever con pivot being attached to one of my
check movements described in my Patent of July 3 1885 No. 8072. shown by the
dotted line. The holes 1 to 7 are for adjusting the tension of the spring.
Fig. 6 sectional elevation of Fig. 3. showing the position of the spring the radial
arm and lever c.
Fig. 7 plan of leather piston cup used in the cylinder Figs. 3 4. 5 and 6. into
which a groove is cut and the spring inserted for adjusting same to the
cylinder o.
Fig. 8 sectional elevation of Fig. 7.
Fig. 9 detail plan of the barrel. Fig. 1 showing how the outer end of the scroll
spring or springs are connected thereto and the keyways in the boss a¹.
Fig. 10 sectional elevation of Fig. 9.
Fig. 11 plan of one of the leverse Fig. 1. This lever is fitted to the boss of.
Fig. 9. It has keys to fit into the keyways and for adjusting purposes may be
changed from one position to another.
Fig. 12 plan of the outer lever, ee Fig. 1. This lever has a boss made to work
on the boss of Fig. 9. The grooves 1 and 2. are for connecting the inner ends of
the scroll spring or springs.
Fig. 13 elevation of Fig. 12.
Fig. 14 sectional elevation of adjustable shoe which connects the door to the
pivot Fig. 1. This shoe contains a swivel lever one end of this lever containing
a screw nut for receiving the screw w.
Fig. 15 plan of Fig. 14.
Fig. 16 plan of adjustable top centreplate. . is a slide actuated by the screw y.
This slide contains the centre bearing for the top of the door.
Fig. 17 elevation of Fig. 16.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed declare that
what claim is
1. The shallow well door spring hinge.
2. The mode of applying the scroll spring or springs substantially as described
in Figs. 1 to 6 or any mere modification thereof.
3. The application of the check action to Figs. 1 and 2 substantially in manner
described and illustrated in Figs. 3. 4. 5 and 6.
4. The pivot bearing i. as described and illustrated in Figs. 2. 4 and 6.
5. The peculiar forination of the box for the purpose of carrying the adjustable
screws for levers ee Fig. 1.
6. The centre pillar bearing for carrying the barrel and spring described and

page_text: 7. The general combination and construction of door closing apparatus substan-
tially as set forth, described and illustrated in the drawings, or any mere
modification thereof.
JAMES ADAMS.