An Improved Buckle for Straps and other Purposes.
Year: 1897

page_text: Date of Application, 13th May, 1897-Accepted, 3rd July, 1897
UUMILETE SPECIFICATION.
An Improved Buckle for Straps and other Purposes.
We, WILLIAM MONTAGU COWARD Engineer, CHARLES LANCELOT GARLAND
Gentleman, and OCTAVIUS PLATER CLAYTON Gentleman all of 156 Vickery's
Chambers 82 Pitt Street Sydney in the Colony of New South Wales, 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;-
-
The object of this invention is to provide an improved buckle that will be self
locking and will dispense with the usual tongue and also the corresponding holes
in straps.
The ordinary strap buckle is provided with a tongue to engage with holes in
the strap and it frequently happens that there is no hole just in the position
required; this necessitates making a fresh hole and thus weakening the strap, and
it is not always an easy matter to withdraw the tongue when undoing the strap.
Now this invention provides a buckle that is self-locking and will secure the
strap in any position without the necessity of providing holes therein, but in order
that it may be more fully understood reference will be made to the accompanying
sheet of drawings which form a part of this specification and in which;
Figure 1 is a top view of this improved buckle.
Figure 2 is an under view of figure 1.
Figure is a side view of figure 1 shewing the strap attached.
Figure 4 is a longitudinal section of figure 1.
Figure 5 is a longitudinal section of a modification of the gripping cam.
All figures are on an enlarged scale and similar letters are used in each to denote
similar parts.
A A are the sides of the buckle which are preferably constructed of metal the
forward ends of which are slightly curved upwards. These sides A A are kept in
position by the metal bars B and C the latter carrying a loose sleeve or pulley D.
A loose cam E preferably cylindrical having grooves milled edge or small pro-
jecting teeth is placed between the sides A A and at a suitable distance from the
loose sleeve or pulley D and is supported in position by the pins FF which pass
through each of the sides A A. This cam is provided with short lugs G, G, pro-
jecting slightly over the sides A A for the purpose of preventing the cam travelling
more than a given distance. A small weak spring H is provided as shewn in
figures 1 and 2 to give the cam a constant inclination toward the loose sleeve
or pulley D.
In figure 5 is shewn a modification which may be made in the construction of
the cam by making same segmental instead of cylindrical and may be provided
with a projection I, so that the cam may more easily be pulled back.
Any suitable weak spring may be substituted for the spring H so long as it will
give the cam a constant inclination toward the loose sleeve or pulley D.
In operation when it is desired to fasten the strap (one end J of which is firmly
secured in the usual manner to the bar B) the free end K is passed up between the
[Price 8d1

page_text: loose sleeve or pulley D and the cam E as shewn in figure 3, and pulled tight or
until in the position desired.
On releasing the strap the projecting teeth of the cam E will bite into the under
side and hold the same secure the lugs G, G, preventing the cam from being pulled
round. To undo the strap it is necessary to slightly pull same so as to release
the toothed edge of the cam, the finger nail may then be inserted in the groove L,
and the cam held back while the strap is withdrawn. For neatness the usual strap
loops may be provided for passing the free end of the strap through after locking.
It will be obvious that in passing the free end of the strap into the buckle the
toothed edge of the cam E will present no obstacle whatever, but immediately a
return strain is placed upon the strap it will bring the cam into play and will be
securely locked in any required position.
By the use of this improved buckle the necessity of providing holes in straps
will be done away with, and thus a much stronger strap will be secured as it will
be obvious that punching a number of holes in a narrow strap must necessarily
weaken the same.
By a modification in the construction of this improved buckle it may be used for
small ropes as well as straps all that would be necessary would be to curve the bar U
outwards and the cam E inwards to suit the size of rope to be used.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what we
claim is;-
1st. In strap buckles a gripping cam provided with grooves or small projecting
teeth and so arranged that it will automatically grip and hold the strap,
substantially as herein described, explained, and illustrated in the drawings.
2nd. In combination the buckle sides A, A, the bars B, and C, loose sleeve or
pulley D, cam E provided with the lugs G, G, substantially as herein described,
explained and illustrated in the drawings.
3rd. In combination the buckle frame A, A, bars B, and C, loose sleeve or
pulley D, the cam E either cylindrical or segmental, a downward spring to give
the cam a constant inclination towards the loose sleeve or pulley D, and lugs G
to govern the movement of the said cam, substantially as herein described,
explained and illustrated in the drawings.
4th The combination and arrangement of the various parts herein described,
explained and illustrated altogether forming the improved buckle for straps and
other purposes substantially and for the purposes set forth.
K
10
HASELTINE, LAKE & CO.,
45 Southampton Buildings, W.C., Agents for the Applicants.