A NEW SYSTEM OF BUCKLES WITHOUT PRONGS WITH A PRESSURE IN CONTINUITY THROUGH A MOVEMENT OF FRICTION
Year: 1874

page_text: LETTERS PATENT to Louis Hyacinthe Dethiou, 148, Great Portland
Street, in London, for the Invention of "A NEW SYSTEM OF BUCKLES
WITHOUT PRONGS WITH A PRESSURE IN CONTINUITY THROUGH A MOVEMENT OF
FRICTION."
Sealed the 31st July 1874, and dated the 12th February 1874.
PROVISIONAL SPECIFICATION left by the said Louis Hyacinthe
Dethiou at the Office of the Commissioners of Patents, with his
Petition, on the 12th February 1874.
.
I, LOUIS HYACINTHE DETHIOU, of 148, Great Portland Street, in
London, do hereby declare the nature of the said Invention for "A
NEW SYSTEM OF BUCKLES WITHOUT PRONGS WITH A PRESSURE IN CONTINUITY
THROUGH A MOVEMENT OF FRICTION," to be as follows:-
This buckle is applicable to all purposes, as to say, trousers, waist-
coats, garters, braces, gloves, stays, leather strings, bandages, marine &
building cords, because it is possible to make it in every size & form,
according to the requirement.

page_text: The buckle is made with two pieces, the frame & the enclosure (plate).
The frame is pierced with two holes to adapt in them the enclosure
(plate). This plate when it opens receives a friction at the bottom of
the sides through their contact with the enclosing sides, (and that
compels the plate to fall down to the enclosing frame.
Though the friction works only to a limited degree of overture the
buckle can be entirely opened, so that more than sufficient space is
given to the passage of the stuff or leather string.
At the opening the enclosing (or frame) square has a conical form.
On this conical bar are stopped the stuffs or leather strings under the
plate, which presses upon them according to the law of friction.
The buckle is made either all in iron or in copper (or in any metal),
& is only composed of two pieces.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Louis Hyacinthe Dethiou in the Great Seal 1
Patent Office on the 12th August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
HYACINTHE DETHIOU, of 148, Great Portland Street, in London, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of February, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Louis Hyacinthe Dethiou, Her special
licence that I, the said Louis Hyacinthe Dethiou, my executors, admi-
nistrators, and assigns, or such others as I, the said Louis Hyacinthe
Dethiou, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"A NEW SYSTEM OF BUCKLES WITHOUT PRONGS WITH A PRESSURE IN CONTInuity
THROUGH A MOVEMENT OF FRICTION," upon the condition (amongst others)

page_text: that I, the said Louis Hyacinthe Dethiou, my executors or admini-
strators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Louis Hyacinthe Dethiou, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The buckles forming the subject of the present Invention are appli-
cable to all the articles forming the following group, namely, trousers,
waistcoats, garters, braces, gloves, corsets, waistbands, belts, straps,.
bandages, ships' ropes, building ropes, shoes, and generally all that
concerns the equipment of armies, baggage, and so on, tent cords, tether
ropes, ropes for furling and unfurling sails, and so on.
The buckles may be of any desired form or dimensions according to
their application. The following description of their construction will
be readily understood by reference to the accompanying Drawings, and
of which Figure 1 is a view of the under part of a buckle fixed by two
rings e, e, to the plate p of a belt.
Figures 2 and 3 are front views of the inside and outside of the
buckle.
Figures 4 and 5, the inside and outside of the frame.
Figures 6 and 7 are like views of the locking plate.
Fig. 8 represents the clasp serving to fix the belt.
Fig. 9 is a view of the outside of a buckle for cordage.
Figs. 10, 11, and 12 are details of the frame and plate of a buckle for
a cord.
Figs. 13 and 14 show, the first the buckle for trousers and waistcoats
seen externally, and the second the frame of this buckle.
Fig. 15 is a garter buckle.
Figs. 16 and 17 are the inside and outside of the frame of this same
buckle, the plate of which is shown by Fig. 18.

page_text: Finally, Fig. 19 is a glove buckle, the clasp of which is seen Fig. 20,
and the frame Fig. 21.
The same letters of reference indicate like parts in the several Figures.
The buckle consists of two pieces or parts, the frame a and the plate
or lock b. The frame a has only threed sides, and is pierced on its two
sides with two holes wherein to lodge the pivots c, c, of the plate,
thus rendered solid with the frame. In rear of the lock b is a space
destined to hold the tissue, cord, or strap.
The following is the manner in which the two pieces a and b operate
one on the other on the principle that I call "the frictional system:"-
The two extremities d, d, of the sides of the frame are flattened and bent
with a gentle curve, and are sloped, so that being more open at the top
they present an inclined plane, on which the rear end of the sides of the
lock plate rest. This plate is itself raised at the rear on its angles, so
that it rests on the sloping ends of the frame, which it causes to open on
the pivots each time that the lock plate is raised or lowered, that is to
say, each time the buckle is opened or closed.
The buckle opens entirely for the passage of the tissue, cord, or strap.
In front or at the opening of the frame the latter forms an inclined
plane f. It is on this inclined part that the tissues, cords, or straps are
arrested by the locking plate exercising a continuous pressure on the
inclined plane f.
To prevent the plate 6 from descending lower than its frame several
systems may be employed.
1. Two notches 9, 9, (Fig. 5) inside the frame forming stops at its
base, and the lock plate being furnished with two projections h, h,
(Fig. 6) on the sides, so that the projections rest on the stops.
2. Two stops i, i, (Figs. 10 and 11) inside and at the base of the
frame, formed by the metal being pressed out, and on which the lock
rests without projections.
3. Two arms o, o, (Figs. 15 and 18) on the sides of the lock, and
forming part with it. These arms bear upon the frame. In this way
they serve at the same time to open the buckle, for instance, as applied
to garters.
The glove buckle (Figs. 19, 20, and 21), although on the same
principle, is a little modified, necessitated by its application. To fix

page_text: it to the glove there are at the sides of the frame two eyes n, n, forming
part of it, and pierced to admit of sewing it to the glove.
In opening the glove buckle its small size does not admit of passing
the finger beneath it. The rear of the plate is raised in a projection at the
end opposed to the part forming the lock. This extending projection by
pressure of the finger allows the plate to see-saw when it is desired to
open the buckle.
For larger buckles for cables the simple weight of the lock suffices to
hold the ropes, and the combination of parts is consequently simplified.
Having thus described my Invention, I claim, the system of buckles
herein mentioned and illustrated, and characterized by the suppression
of prongs, and acting by a continuous pressure by a frictional system.
The form and dimensions and materials of construction of the buckles
would naturally vary to suit the purposes to which they are applied.
In witness whereof, I, the said Louis Hyacinthe Dethiou, have
hereunto set my hand and seal, this Twelfth day of August,
in the year of our Lord One thousand eight hundred and seventy-
four.
LOUIS HYACINTHE DETHIOU. (L.S.)