AN IMPROVED SELF-ACTING STOP FOR DOORS AND OTHER APPLIANCES
Year: 1876

page_text: LETTERS PATENT to Richard Walter Hellyer, of 18, Culworth Street, Regent's
Park, in the County of Middlesex, Engineer, for the Invention of "AN
IMPROVED SELF-ACTING STOP FOR DOORS AND OTHER APPLIANCES."
PROVISIONAL SPECIFICATION left by the said Richard Walter Hellyer at
the Office of the Commissioners of Patents on the 10th October 1876.
RICHARD WALTER HELLYER, of 18, Culworth Street, Regent's Park, in the
County of Middlesex, Engineer. "AN IMPROVED SELF-ACTING STOP FOR DOORS
AND OTHER APPLIANCES."
A simple and efficient arrangement of apparatus for fastening or stopping doors,
gates, lights, casements, windows, or other appliances that require to be fixed in
any particular position, and the Invention consists essentially of a roller or ball
fitted or not on centres in a plug made to slide or move in a box by action of a
spring or elastic material, and the box fixed to such doors, gates, lights, casements,
windows, or other appliances, and by means of such Invention, in connection or not
with a socket, such doors, gates, lights, casements, windows, or other appliances
can be fixed in any particular position either by the action of such roller or ball
falling or fitting into a socket let into the surface of the substance against which
such doors, gates, lights, casements, windows, or other appliances impinge, or by the
action of such roller or ball by means of such spring or elastic material exerting
sufficient pressure on the substance against which such doors, gates, lights, case-
ments, windows, or other appliances impinge as to cause such doors, gates, lights,
casements, windows, or other appliances to remain in any particular position
without the use of such socket.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Walter Hellyer in the Great Seal Patent Office on the 5th
April 1877.
RICHARD WALTER HELLYER, of 18, Culworth Street, Regent's Park, in the
County of Middlesex, Engineer. "AN IMPROVED SELF-ACTING STOP FOR DOORS
AND OTHER APPLIANCES.'
"
My said Invention relates to a simple and efficient arrangement of apparatus for
fastening or stopping doors, gates, lights, casements, windows, or other appliances
that require to be fixed in any particular position, and consists essentially of a
roller or ball fitted in centres in a plug made to slide or move in a box by action of
a spring or elastic material, and the box fixed to such doors, gates, lights, casements,
windows, or other appliances, and by means of such Invention, in connection or not
with a socket, such doors, gates, lights, casements, windows, or other appliances
can be fixed in any particular position either by the action of such roller or ball
falling or fitting into a socket let into the surface of the substance against which
such doors, gates, lights, casements, windows, or other appliances impinge, or by
the action of such rollers or ball by means of such spring or elastic material exerting
sufficient pressure on the substance against which such doors, gates, lights, case-
ments, windows, or other appliances impinge, as to cause such doors, gates, lights,
casements, windows, or other appliances to remain in any particular position
without the use of such socket.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same, and for that purpose shall refer to
the several Figures on explanatory Sheet of Drawings hereunto annexed, the same
letters of reference indicating corresponding parts in all the Figures.
---
Figure 1 of my Drawings represents an elevation, ready for use, of my improved
apparatus for fastening or stopping doors, gates, lights, casements, windows, or other
appliances that require to be fixed in any particular position; Figure 2 represents
a section on line 3 3 of Figure 3; and Figure 3 represents a plan of socket
when required for reception of roller or ball A; Figure 4 represents a plan of
Figure 1 along line 3 - - - 3; Fig. 6 represents a vertical section of Figure 1 along
line 1
- 1; Figure 7 represents the roller or ball fitted with a spring and nut
ready for use and shown by dotted lines on Figure 1.
---
The various parts must be made of such sizes and strength as to suit the use to
which the Invention is to be applied. Large and heavy doors, gates, lights, case-
ments, windows, and other appliances that require to be fixed in any particular
position require the parts of the Invention to be made much larger and stronger
than smaller ones.
A is the roller or ball revolving on a centre pin B fixed in a journal C; and D is
a pin fixed into a journal C, and around which the spring E works; F is a nut for
adjusting position of apparatus to suit irregularities of surface on which roller or
ball A impinges, and also to prevent the apparatus escaping from box J when
Invention is fixed in a position without constant impingement; G are lugs on
Journal, which work up and down in slots H to preserve journal C in proper position;
J is the box in which the apparatus works; K is the socket in which roller or ball A
falls when same is required. In using any elastic material, in lieu of the spring E
the pin D and nut F may be dispensed with or not.
To illustrate more fully the mode of using my Invention as applied to a large
hall door, I will now describe one of the modes of fixing and action of same, I
would insert the box J containing the apparatus with the roller or ball in the proper
direction for the door opening and shutting, travelling on the roller or ball into the
bottom of the door in a vertical position, as shown in Figure 1, and fasten same by
means of screws through plate L, and by preference the box should be inserted at
about one-third of the entire width of the door from the hinges, the lugs G not
projecting beyond the bottom of the door. The pressure of the spring E would

page_text: cause the roller or ball A to impinge so closely on the hall floor as to keep the door
stationary in any position desired, and if wished, one or more sockets K could be
countersunk into the floor into which the roller or ball A could drop.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the manner in which the same is or may be used or carried into effect, I
would observe, in conclusion, that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein-before in part recited
Letters Patent is,-
First. The application and use of a roller or ball working in a box under pressure
from a spring or elastic substance to doors, gates, lights, casements, windows, or
other appliances that require to be fixed in any particular position, the parts or
elements being combined and arranged to operate together, substantially in the
manner herein-before described and illustrated by my Drawings.
Second. The application and use of the lugs G in conjunction with the slots H,
acting as guides to maintain the proper position of roller or ball A as combined and
arranged to operate together, substantially in the manner and for the purpose
herein-before declared and illustrated by my Drawings.
In witness whereof, I, the said Richard Walter Hellyer, have hereunto set
my hand and seal, this Fourth day of April, in the year of our Lord One
thousand eight hundred and seventy-seven.
RICHARD WALTER HELLYER. (L.S.)