Improvements in and relating to Padlooks.
Year: 1893

page_text: Date of Application, 31st Jan., 1893-Accepted, 11th Mar., 1893
Improvements in and relating to Padlooks.
I, FREDERICK EGGE, a citizen of the United States of America, residing at
No. 107 Park Avenue, in the City of Bridgeport, County of Fairfield and State
of Connecticut, one of the United States of America, 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 certain new and useful improvements in padlocks, the
object being to produce a lock suitable for use as a bicycle lock.
In the accompanying drawings-
Figures 1 and 2 are interior plan views showing respectively the position of
parts when locked and unlocked.
Similar numbers denote like parts in both figures of the drawing.
1 is the case within which the parts are assembled and a, b, c, d, are rivets
suitably located and secured within said case and by means of which the outer
cover or shell (not shown) may be fastened to the case 1 in the usual manner.
2 is the shackle which consists of a single wire link open at one side, and bow-
shaped at both ends, the lower extremity 3 of the wire at said opening being
flattened for the purpose presently explained.
This shackle extends throughout the case 1, and projects above and below the
same as shown, and is capable of a sliding movement within suitable bearings in
the side of the case.
4 is a shoulder rigid on the back of the shackle, and 5 a coil spring around that
part of the shackle and confined between said shoulder and the side of the case,
whereby the nose 10 of the shackle is projected beyond the caso.
6 are the tumblers pivoted around the rivet a, and having springs 7 which bear
against the side of the case. 8 are the usual gates in the tumblers, and 9 the key-
hole through which a flat key may be inserted and forced against the tumblers to
bring the gates into alignment opposite to the part 3, whereby the latter will be
driven by the action of the spring 5 within said gates, thereby projecting the nose 10
beyond the case and opening the lock, as seen at Figure 2.
The edges of the tuinblers opposite the key slot are concaved, as shown, at 11,
in order that the key may be properly guided so as not to slip along said edges.
In my present improvement, the shackle and tumblers are entirely independent.
and are provided with separate springs.
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
olaim is :-
1. In a padlock, the combination of the shackle consisting of a single wire link
open at one side and bow-shaped at both ends, the lower extremity of the wire at
said opening being flattened, said shackle having a shoulder at its back, the spring
around said shackle and confined between snid shoulder and the case of the lock,
and the tumblers provided with springs which bear against the lock-case and
having gates, said tumblers being pivoted within the lock-case independent of the
shackle, substantially as shown and set forth.
2. In a padlock, the combination with the pivoted gated tumblors having springs
which bear against the side of the lock case, of the shackle made from a single
piece of wire bow-shaped at both ends and open at the front side, and an independent
spring by which said shackle is actuated, the lower extremity of said wiro being

page_text: flattened and adapted to enter the gates of the tumblers during unlooking, substan -
tially as shown and described.
Dated this 81st day of January 1893.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.