Improvements in Collapsible Gates and the like.
Year: 1898

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 Comptroller General, of the 14th day of November 1898.
Date of Application, 15th Apr., 1898-Accepted, 20th May, 1898
COMPLETE SPECIFICATION (AMENDED).
Improvements in Collapsible Gates and the like.
I, JAMES CAUDREY, Pattern Maker, of Blackfriars Road, London, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
66
This invention relates to certain improvements in collapsible gates, shutters
and the like (hereinafter referred as to gates") and has for its objects to
simplify and cheapen the cost of manufacture, and to obtain an improved action
of the crossed extension and collapsible bars (hereinafter referred to as "lazytong
bars") in relation to the parallel gate bars proper (hereinafter referred to as the
gate bars") whereby the gate bars, at their widest distance apart, will be auto-
matically locked equidistant apart, and the liability of certain irregularities of
working incidental to collapsible gates constructed as hitherto will be avoided,
as hereinafter more particularly referred to.
In collapsible gates as hitherto constructed, the lazytong bars, at their central
joints, are pivotally connected to the gate bars, and, at their outer joints, are
pivotally connected to each other but are not so connected to the gate bars, and
the gate bars serve to guide the outer joints of the lazytong bars, either by the
gate bars being oppositely channelled and serving to guide the pivot pins of the
outer joints of the lazytong bars, or, by the gate bars being slotted and similarly
acting in relation to said pivot pins, or, by the gate bars being formed as rods
and adapted to engage with sleeves applied to the outer pivoted joints of the
lazytong bars; the two former of which arrangements, among other incon-
veniences, weaken the gate bars or necessitate gate bars of otherwise unnecessary
weight and costly section, and the lastly mentioned of which arrangements is
inconvenient in increasing the thickness of the gate and in causing unnecessary
friction between the parts and difficulty in working.
As, in all such arrangements, only the central joints of the lazytong bars are
pivoted to the gate bars, there is a certain amount of freedom of motion between
the other or outer joints of the lazytong bars which have a sliding engagement
with the gate bars, which renders the gate bars liable to get out of parallel and to
be unevenly spaced apart when drawn asunder, as in opening the gate.
To the end of remedying all such inconveniences and defects, and of attaining
the advantages herein referred to, the present invention consists in the improve-
ments hereinafter described with reference to the accompanying drawings: on
which, Fig. 1. represents a diagrammatic representation of part of a collapsible
gate constructed according to the present improvements, showing the same in
side view and extended to its widest extent; Fig. 2, represents an end view
thereof Fig. 3, represents a side view showing the gate as collapsed; Fig. 4,

page_text: represents an end view thereof; Fig. 5, représents a sectional plan on the line
A-B, Fig. 1; Fig. 6, represents a like view on the line C-D, Fig. 1; Fig. 7,
represents a plan of Fig. 3; and like reference letters indicate like parts wherever
repeated.
a, represents the gate bars, and 6, the lazytong bars, the central joints, c, of
which latter are pivotally connected to the gate bars in an ordinary manner.
According to the present improvements, the outer ends of the lazytong bars are
slotted lengthwise as at 1, and adapted to engage with pivot or guiding pins, c¹,
arranged at fixed points equidistant from and on each side of the central
joints, c, and which serve to connect and secure the opposite pairs of gate bars, a,
and also act as relatively fixed guides to the adjacent crossed and slotted outer
ends of the lazytong bars, b, which lie between the outer gate bars, a, the
arrangement being such that, when the gate bars are closed together and the
gate is collapsed (wide Fig. 3,) the inner ends of the slots, 61, in the lazytong bars
will abut against their respective guiding pins or pivots, cl, while, when the gate
is opened or distended (ride Fig. 1) the outer ends of such slots will abut against
such pins or pivots, and so will automatically lock the parts and cause the spacing
apart of the gate bars to be equidistant throughout the width of the gate. Such
improved construction is also of advantage in enabling the gate bars to be made
of plain bars, whereby the weight of the gate may be reduced without lessening
the strength or durability, though such bars may be made of any required fancy
section.
Any required number of such sets of lazytong bars may be applied and used;
depending upon the height of the gate.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be perforined, I declare that what
I claim is:-
In collapsible gates and the like, in combination, a series of gate bars connected
in opposite pairs at equidistant and relatively fixed points by central and outer
pins serving to locate the opposite pairs of gate bars in the desired relation to
each other, and series of crossed lazytong bars arranged between the gate bars,
and each having a centre-holé at one end or at its midlength and a slot at its
outer end or at each outer end, said centre-hole being adapted to engage with
said central pin of the gate bars, and said slots being adapted to engage with said
outer pins, in manner aforesaid.
Dated this 4th day of April 1898.
DAY, DAVIES & HUNT,
Chartered Patent Agents; 321; High Holborn, London, W.C.,
Agents for the Applicant.