Improvements in Holding and Locking Mechanism for Use more Particularly in Connection with the Hind Doors of Road Vehicles known as Dog Carts.
Year: 1888

page_text: Date of Application, 28th Aug., 1888
Complete Specification Left, 28th May, 1889-Accepted, 6th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Holding and Locking Mechanism for Use more
Particularly in Connection with the Hind Doors of Road Vehicles
known as Dog Carts.
I, RICHARD STOREY, of Ings, near Kendal in the County of Westmoreland, Joiner
and Wheelwright, do hereby declare the nature of this invention to be as follows:-
This invention of improvements in holding and locking mechanism for use more
particularly in connection with the hind doors of road vehicles known as dog carts
consists firstly in the employment of a hollow cylinder or drum fixed within the body
of the vehicle the drum containing a chain barrel rotating in combination with a coiled
spring and the chain for holding or suspending the door in the required position when
open being wound upon the barrel assisted by the resilience of the coiled spring as
the door is being closed thereby preventing the jamming of the chain between the
edge of the door and side of the vehicle and being moreover entirely out of the
way when the door is closed.
A further part of my invention consists in providing a projecting catch within the
side of the vehicle and placed preferably near to the chain drum and in moun..ng
upon the inner side of the door a pivotted hook or latch acted upon by a spring
which automatically hooks on to and engages with the catch when the door is closed or
slammed to. Pressure upon one arm of a finger piece or lovor projecting outside
the door causes the spring latch to be moved or lifted free of the catch when the door
is to be opened.
A chain drum and catch appliance as above described may be used on each side of
the vehicle or on one side only as may be found desirable and the mechanism may
obviously be employed for doors working in a manner analogous to that of the hind
doors of dog carts to which my said invention is more particularly applicable.
Thin 50.1 f Anunt 1000
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Holding and Locking Mechanism for Use more
Particularly in Connection with the Hind Doors of Road Vehicles
known as Dog Carts.
I, RICHARD STOREY, of Ings, near Kendal, in the County of Westmoreland, Joiner
and Wheelwright, 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 of improvements in holding and locking mechanism for use
more particularly in connection with the hind doors of road vehicles known as dog
carts consists firstly in the employment of a hollow cylinder or drum fixed within the
body of the vehicle the drum containing a chain barrel rotated by means of a coiled
spring and the chain for holding or suspending the door in the required position
when open being wound upon the barrel assisted by the resilience of the coiled spring
as the door is being closed thereby preventing the jamming of the chain between the
edge of the door and the side of the vehicle and being moreover entirely out of the
way when the door is closed.
A chain drum as above described and catch appliance may be used on each side of
the vehicle or on one side only as may be thought desirable and the apparatus may
obviously be employed for doors working in a manner analogous to that of the hind
doors of dog carts.

page_text: In the accompanying drawings,
Fig. 1 is a sectional side view of so much of the rear part of a dog cart as is
necessary to illustrate the mode of applying my invention thereto.
Fig. 2 is a cross section.
Fig. 3 a front view partly in section; and
Fig. 4 an end view of apparatus constructed according to my said invention.
A represents the hind door of a dog cart hinged in the usual way to the floor of the
body part of the vehicle B. a is the hollow cylinder or drum which is fixed to the
inner side of the vehicle by means of screws bb, and c is the chain barrel fastened
upon the axis or central pivot d. e represents the space occupied by a coiled ribbon
or watch spring (not shown in Fig. 2) but which is to be fastened at its inner end to
the pivot d and at its outer end to the cylinder a in the usual manner as will be
well understood. f is the chain (shewn only in Fig. 1) which is preferably of the
type known as a
pitch" chain although it may be of any convenient construction
to permit of its winding up flat on the chain barrel c and of any suitable metal but
preferably of such as will not oxidize or rust.
<
C
In lieu of the pivotted hook or latch arrangement referred to in my Provisional
Specification as a means for holding the door to when closed I prefer to adopt the
arrangement shewn in Figs. 3 and 4 in which the finger g is capable of being moved
radially or sidewise having the stem of the screw p as a centre the finger g having on
its underside a key or projecting pin passing through the radial opening or slot j.
When the finger g is in a vertical position as shewn in Fig. 4 the key or pin h will
have entered a notch in the inner flange of the chain barrel which may be
formed with any convenient number of similar notches. Thus the door A may be
suspended or held at any desired angle and securely fastened in its closed position.
s is a spring to press upon the fingery and produce the required friction to hold the
said finger in position in the notch or when moved out of the notch (in the position
indicated in dotied lines in Fig. 4).
The opening in the periphery of the drum a through which the chain ƒ passes in
and out is shewn at Fig. 4 and (in dotted lines) at Fig. 3.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The use or employment for the purpose set forth of apparatus in which a chain
is wound upon a barrel by the operation of a coiled spring the said chain barrel and
coiled spring being arranged side by side upon a common axis substantially as
described and shewn in the drawings.
2. In combination with a chain barrel arranged and operating in the manner
indicated in claim 1 the use or employment of a locking device consisting of a catch
or finger such as g having a pin which engages with notches in the chain barrel sub
stantially as described with reference to and shewn at Figs. 3 and of the drawings
for the purpose set forth.
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