An Improvement in Bolts for Fastening Casements, Applicable also to other Analogous Purposes.
Year: 1888

page_text: Date of Application, 2nd Oct., 1888
Complete Specification Left, 2nd Aug., 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
An Improvement in Bolts for Fastening Casements, Applicable also
to other Analogous Purposes.
I, FRANCIS JOSEPH JAMES GIBBONS, of Saint John's Works Church Lane, Wolver-
hampton in the County of Stafford, Lock Manufacturer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improvements in bolts which are used for fastening
casements applicable also to other analogous purposes, and generally known by the
term "Espagnolette Bolts."
These bolts consist of a round rod of the same length as the casement, and fitting
upon this rod at certain intervals are flaps similar to the half of a butt hinge which
are secured to one side of the casement by means of screws, whilst at either end
there is affixed thereto a tongue which fit into the opposite side of the casement
and each being actuated by a lever which is jointed to a piece of metal also affixed
to the rod in about the middle of the same. This lever when at rest hangs parallel
with the bolt or rod, and behind a catch, when the casement is closed, but upon
raising it to a right angle a lever is formed, and upon turning the same, the rod
with the tongues affixed thereto are turned out of the opposite side and the
casement may be opened.
This plan howover has been found defective inasmuch as only the top and bottom
of the casement could be secured thereby.
My improvements consist in securing the middle of the casement also, by the
addition of two, three, or more tongues at equal intervals, which I affix to the rod
with pins or any other method I may hereafter find most suitable.
The method of actuating the rod to which all the tongues are affixed is precisely the
same as that hereinbefore described.
W. H. ST. AUBIN,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Bolts for Fastening Casements, Applicable also
to other Analogous Purposes.
1, FRANCIS JOSEPH JAMES GIBBONS, of Saint John's Works, Church Lane, Wolver-
hampton, in the County of Stafford, Lock Manufacturer, 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 relates to improvements in bolts adapted for the purpose of fastening
casements and other similar hinged structures, and has more particular reference to
what are known in the trade as espagnolette" bolts, and is equally applicable to any
type of bolt fitted with grips and operated by partial rotation about its axis.
"
The object of the invention is to adapt the bolt to take a firmer and more regular
hold of the opposite casement, or corresponding part of the structure; and to effect
this object, I increase the number of grips and sockets along the bolt according to its
length, placing them at regular intervals. By this improvement, any strain brought
to bear upon the casement is distributed equally through all the grips and sockets,
instead of, as would be the case with an espagnolette bolt made as heretofore,
falling upon a pair of terminal grips and sockets.
to be carried into
In order that my invention, and the means by which the same
practical effect, may be thoroughly understood, I will now describe then in detail,

page_text: referring in so doing to the accompanying figures which are to be taken as part of
this specification and read therewith.
Fig. 1 is an elevation illustrating the application of my invention.
Figs. 2 and 3 are side elevations of the adjacent faces of the respective casements
illustrated in Fig. 1.
A, A are the flaps, and B, B, the tubular covers. It has hitherto been the practice
to use a round rod to carry and operate the grips, C, which have been pinned to the
said rod. But according to my present invention, I use a square rod, and make the
holes in the grips, by which they are passed onto the rod, square also, and of the same
size as the cross section of the rod; so that the latter takes a much better hold of them
than if it were round, and they only pinned to it.
It will be noticed that in the bolt illustrated there are three additional grips Cand
and flaps A whereas in a bolt of the length illustrated and made according to the
method hitherto in vogue there would have been only the top and bottom grips C, C.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The herein before described improvements in bolts of the espagnolette type whereby
by the distribution of intermediate grips the holding power of the bolt is increased
and improved accordingly.
Dated this 2nd day of Aumu 1000
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, W.C., Agents for the Applicant.