Improvements relating to Hydraulic Door Onecks and like Appliances.
Year: 1895

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883), as required
by the decision of the Law Officer of the 19th day of May 1897.
Date of Application, 19th Dec., 1895
Complete Specification Left, 19th Sept., 1896-Accepted, 31st Oct., 1896
Improvements relating to Hydraulic Door Onecks and like
Appliances.
We, ROWLAND HODGES, of 12 Frederick Street, Brassfounder, and SAMUEL HILL,
of 260 New John Street West, Cabinet Bar Fitter, both in the City of Birmingham,
do hereby declare the nature of this invention to be as follows:-
This invention consists of improvements relating to hydraulic door checks and
like appliances, my object being to so arrange the vent or discharge outlet from the
cylinder or like part of the appliance as to prevent the violent agitation of the
issuing liquid which occurs with the ordinary vent or outlet, and to provide means
whereby the rate of discharge can be readily adjusted without removal of the
cistern cover or the top plate of the check.
In the application of my invention to a door closing and checking appliance for
fixing beneath a swing or other door I arrange the cylinder and piston with the
spring or other closing mechanism within a metallic box or cistern which is let
into the floor in the usual manner. At one end of the cylinder or upon a separate
closing cap screwing or fitting within the same, I provide a boss or projection
having a screw plug fitting into it for closing or regulating the discharge through
a small orifice forming a communicating passage between the cylinder and a double
vent or discharge outlet, consisting of holes drilled through from the exterior of the
boss or cap. The closing movement of the door under the action of the spring or
other closing mechanism is checked by the small orifice through which the liquid
from the cylinder must be forced on its displacement by the piston, and thus the door
is closed without violence. I so arrange the double vent passages that the liquid
shall be discharged from the cylinder towards the angle or corner of the cistern and
by thus providing a double outlet with a maximum straight line distance between the
mouth of each outlet and the obstructing metallic surface of the cistern, the liquid is
discharged into the cistern without any violent agitation or disturbance, and thus
leakage is prevented.
The screw plug herein before referred to is provided with a slotted head for the
reception of the end of a screw-driver or like tool, and immediately over or above the
plug I form an aperture in the top plate or cover of the cistern to permit of
the insertion of the tool for regulating the screw plug when it is necessary to adjust
the checking action. The aperture in the top plate or cover is closed by a screw
stud or other suitable stopper.
I do not limit the application of my invention to any particular form or type of

page_text: hydraulic door checks or like appliances but adapt the same with such modifications
as may be necessary to suit the requirements of varying services.
Dated this 18th day of December 1895.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.
Improvements relating to Hydraulic Door Checks and like
Appliances.
We, ROWLAND HODGES, of 12, Frederick Street, Brassfounder, and SAMUEL
HILL, of 260, New John Street West, Cabinet Bar Fitter, both in the City of
Birmingham, 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 consists of improvements relating to hydraulic door checks and
like appliances, our object being to so arrange the vent or discharge outlet from the
cylinder or like part of the appliance as to prevent the violent agitation of the
issuing liquid which occurs with the ordinary vent or outlet, and to provide means
whereby the rate of discharge can be readily adjusted without removal of the
cistern cover or the top plate of the check.
In the accompanying sheet of explanatory drawings to be hereinafter referred to.-
Figure 1 is a sectional elevation, and Figure 2 a plan with the top plate or cover
removed, illustrating a door closing and checking appliance suitable for a swing door,
with our invention applied thereto.
Figure 3 is a sectional view to a larger scale showing the three way passage at the
outlet end of the cylinder.
The same reference letters in the different views indicate the same parts.
We arrange the cylinder A and piston B with the spring or other closing mechanism
within a metallic box or cistern C which is let into the floor in the usual manner.
At one end of the cylinder A or upon a separate closing cap screwing or fitting
within the same, we provide a boss or projection having a screw plug D fitting into
it for closing or regulating the discharge through a small orifice E forming a
communicating passage between the cylinder and a double vent or discharge outlet F
consisting of holes drilled through from the exterior of the boss or cap, as shown at
Figure 3. The closing movement of the door G under the action of the spring or
other closing mechanism is checked by the small orifice E through which the liquid
from the cylinder must be forced on its displacement by the piston, and thus the
door is closed without violence. We so arrange the double vent passages that the
liquid shall be discharged from the cylinder towards the angles or corners of
the cistern, and by thus providing a double outlet with a maximum straight line 4
distance between the mouth of each outlet and the obstructing metallic surface of the
cistern, the liquid is discharged into the cistern without any violent agitation or
disturbance, and thus leakage is prevented.
The screw plug D hereinbefore referred to is provided with a slotted head for
the reception of the end of a screw driver or like tool, and immediately over or 4
above the plug we form an aperture in the top plate or cover H of the cistern C
to permit of the insertion of the tool for regulating the screw plug when it is
necessary to adjust the checking action. The aperture in the top plate or cover is
closed by a screw stud J or other suitable stopper.

page_text: We do not limit the application of our invention to any particular form or type of
hydraulic door checks or like appliances.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we desire to state that we are
aware that double vent passages, or outlets from hydraulic check cylinders have been
previously described, and we make no claim to such passages per se, but what we
claim is :-
An hydraulic door check having a three way passage at the outlet end of the
cylinder and arranged substantially as and for the purposes described and as illustrated
in the drawings.
Dated this 10th day of September 1950.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.