Improvements in Trunk Locks.
Year: 1890

page_text: Date of Application, 20th Dec., 1890-Accepted, 31st Jan., 1891
COMPLETE SPECIFICATION.
Improvements in Trunk Locks.
I, JOSEPH LEGGE, of Stafford Street, Willenhall, 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 :-
My invention relates to that class of trunk locks made out of sheet metal which
are known in the trade as "Scarboro' Trunk Locks." Its object is to simplify and
cheapen the construction of such locks while doing away with the disadvantages
attaching to them when made in the manner at present prevalent.
In a lock of the usual pattern the loops on the hasp, which are engaged by the
lock bolt, are stamped from thick sheet brass and then rivetted in their proper
position on the hasp. The latter being frequently of very light metal has little
hold upon the loops, which are thus liable to be knocked off by the first strain they
have to undergo. Again, what is known as the "padlock staple" is also stamped
out of thick sheet brass and rivetted in its proper position on a flange projecting
from the top of the lock body, and for exactly the same reason as that stated above
is liable to the same disadvantage.
According to my invention the loops of the hasp are formed from the metal of
the hasp itself and in one piece with it, and the "padlock staple" is formed from
and in one piece with the metal of a flange projecting from the top of the lock
body.
In order that my invention may be the more clearly understood I will describe
it in reference to the accompanying drawings and the letters of reference marked
thereon. The same letters occurring in the different figures indicate corresponding
parts.
The first part of my invention is illustrated by Figures 1 to 6. The second part
by Figures 7 to 10. And the combination of the two by Figures 11 and 12.
Figures 1 and 2 are respectively a plan and side elevation of a blank for a hasp
constructed according to my invention. In a lock of the ordinary "Scarboro
pattern this blank would end at the point indicated in Figures 1 and 3 by dotted
lines. The extension shewn in the drawing I utilize for the purpose of forming
the loops to be engaged by the lock bolt. At this part the blank has a hole A cut
through it as shewn, the strips B B on either side of the hole A representing the
loops in their initial form.
The first process through which the blank goes is illustrated by Figures 3 and 4:
the former a plan and the latter a side elevation. Here the top end of the blank is
shown suitably curved and curled in the usual manner for the reception of the wire
by which the hasp is to swing and the two strips B B are corrugated into the
shape of loops.
Figures 5 and 6 illustrate the completed hasp. The extension beyond the dotted
line (Figures 1 and 3) is bent under as indicated, and riveted in its position against
the under surface of the hasp by the rivet C. The hole D at the extremity of the
blank (Figures 1 and 3) is the provision made for this purpose. The bend shewn
in the hasp at F (Figures 5 and 6) is the usual "sunk" part of the hasp designed
to receive the padlock.
Although the illustrations shew two loops B B I do not confine myself to that
number. One, three or even more, may obviously be used if the shape of the blank
be slightly modified.
It will be seen that by the arrangement illustrated and described the loops are
formed from the metal of the hasp itself and in one piece with it. It is therefore
impossible, without destroying the hasp, to knock off the loops. An incidental but
I Price fd1

page_text: appreciable advantage lies in the fact that the strain upon the loops will always be
tensional.
Figures 7 and 8 are respectively a plan and side elevation of a lock body and
"padlock staple" constructed according to my-invention. As will be seen I leave
on the flange G projecting from the top of the lock body a strip of metal H of
suitable length which I shape at the top into an enlarged part I. When this strip H
is corrugated into the shape indicated in Figures 9 and 10 it forms the "padlock
staple."
In Figures 11 and 12 the combination of hasp and "padlock staple" is clearly
illustrated, the hasp being shown in its locked position. The "padlock staple" H
protrudes through a suitable hole in the hasp (K Figures 1, 3 and 5) and it is
prevented from being drawn through the said hole by the enlarged part I shewn by
dotted lines in Figure 11.
It will be seen that by the arrangement illustrated and described the "padlock
staple" is formed from the metal of the lock body itself and in one piece with it.
It is therefore impossible for the padlock staple to be knocked off by any ordinary
strain.
Having thus 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 :-
1st. Forming the loop or loops on the hasp of a trunk lock out of the metal of
the hasp itself, and in one piece with it, substantially as and for the purpose herein
described and illustrated by Figures 1 to 6 of the accompanying drawings.
::
2nd. Forming the "padlock staple of a trunk lock out of the metal of the lock
body itself, and in one piece with it, substantially as and for the purpose herein
described and illustrated by Figures 7 to 10 of the accompanying drawings.
3rd. The combination in the same lock of a hasp having loops constructed
-according--to-my-invention,_and_of_a_lock_body_having a “padlock staple”-con-
structed according to my invention, substantially as and for the purpose herein
described and illustrated by Figures 11 and 12 of the accompanying drawings.
Dated this 19th-day of December 1890..
JOSEPH LEGGE.