Year: 1899

page_text: I, JOHN MICHEL FORNEY, of Nisbet, Pennsylvania, U.S.A., Inventors, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to bolts for securing doors, and more especially to an
improved arrangement of a bolt of this class and means for locking it in its
forward or closed position.
.
The object of the invention is to provide means whereby the ordinary bolt may
be used for its usual purpose and operated by hand to either lock or unlock it
and by which, when desired, the bolt may be locked by a key.
My invention consists in the improved construction, arrangement, and combina-
tion of parts hereinafter fully described and afterwards specifically pointed out
in the appended claims.
In order to enable others skilled in the art to which my invention most nearly
apertains, to make and use the same, I will now proceed to describe its construc-
tion and operation, reference being had to the accompanying drawings, forming
part of this specification, in which―
Figure 1 is a perspective view illustrating a combined bolt and lock constructed
in accordance with my invention in practical use. Fig. 2 is an interior view of
the lock-case looking from the front, with the front plate removed.
Fig. 3 is a vertical section on the line 3-3 of Fig. 2. Fig. 4 is a similar
section on the line 4-4 of Fig 2. Fig 5 is a detail perspective view of the locking
tumbler or latch detached.
Like letters of reference mark the same parts wherever they occur in the various
figures of the drawings.
Referring to the drawings by letters, A indicates a round bolt of ordinary con-
struction, mounted in a barrel B, the barrel being provided with the usual longi-
tudinal slot C, with end branches D and E at right-angles thereto, extending
partially around the barrel, through which slot the laterally projecting handle-
bar F of the bolt extends and by which the bolt may be operated by hand as is
usual. The laterally extending arm or handle F in this instance is provided with
an angular arm F¹ at its outer end, formed into a catch F³, adapted, when the
handle-bar is turned into the branch slot D to retain the bolt in its locked' position
CD
0.71

page_text: in the keeper G, to enter an opening H in the lock-case I mounted upon the same
plate J which supports the bolt barrel.".
Within the lock-case is located a pivoted tumbler or latch K, a circular lug
in the rear of which enters a corresponding opening in the plate the latch
being provided with a hub L and a similar circular end lug L on its outer end
to enter an opening in the front plate of the lock-case, whereby the two end
lugs form trunnions upon which the latch may be turned. The latch when in
operative position to receive the catch F2 rests and is held normally upon the
bottom plate of the lock-caseing. by means of a spring M, consisting of two arms
joined by a central coil, which coil is mounted upon a stem N, projecting inwardly
from the back plate of the lock-casing and the lower arm resting upon the upper
edge K¹ of the latch, which is, widened to provide a proper seat therefor, as shewn
most clearly in Fig. 5.
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The hub L of the latch K is hollow at its front end and is provided with an
angular shaped pintle or lug P to receive the key, by which it may be turned, and
the outer lower edge of the latch is cut away to, permit of the entrance of the
catch F into the lock-case. A flat spring Q, secured to the rear plate of the
lock-case, projects downward in line with the cut-away. portion of the latch K,
and when the catch F2 is within the lock case the normal tendency of this spring
pressing against the inner-face of the latch is, to throw the latch out of the case.
With a bolt and lock constructed as herein before described the bolt may be
operated in the usual manner by using the bar F as a handle to press the bolt
forward and backward, the handle moving in the slot C and its branches D and E;
but when it is desired-to-lock the bolt so that it cannot be removed from, the
keeper G without the key the bar F is pressed inward in the branch slot D until
the catch F enters the opening H in the lock-case and wedges its way under the
latch K, which, by virtue of the tendency of the spring N will immediately drop
behind the point of the latch F2 and securely hold the latch and handle bar against
being withdrawn from the casing. To unlock the bolt, a key provided with a
bore corresponding in-contour with the pintle P is inserted in the hub of the
latch over said pintle and turned, raising the latch K out of engagement with
the point of the catch F, which, being then free, will be pushed out of the casing
by means of the spring Q.
The advantages attending the use of my invention will be obvious from the
foregoing description, and while I have illustrated and described the best means
now known to me for carrying out my invention I do not wish to be understood
as restricting myself to the exact details of construction shewn, but hold that any
slight changes, such as might suggest themselves to the ordinary mechanic,
would properly fall within the limit and scope of my invention.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
(1) The combination with a bolt mounted to rotate and slide in a barrel or
casing and provided with a lateral handle-bar projecting through a slot therein,
said handle bar: being bent inward toward the back plate and formed at its end
into a latch, of a spring actuated latch or tumbler a casing in which said latch
is pivoted, provided with an opening to permit the catch to enter and engage
under the spring latch, and a spring, secured within the casing, and bearing
against the inner end of the catch to push it out of the casing when released
from engagement with the latch substantially as described.
(2) The combination with the back-plate J, of the lock-casing and bolt barrel
mounted thereon, the latter being provided with the longitudinal and branch slots,
the bolt, mounted in the casing, the laterally projecting handle-bar, F, of the bolt,
adapted to move in said slots and having its outer end bent to form the catch, F2,
the latch, K, pivotally mounted in the lock-casing and adapted to be turned with
a key, its lower outer corner being cut away to admit of the entrance of the

page_text: catch into the casing, the spring M, coiled around the stem, N, inside the casing,
having one of its arms bearing upward against the top of the casing and the other
downward against the top of the latch, and the flat spring, Q, secured to the back-
plate, J, and bearing outward against the inner end of the catch, substantially
as described.
DI 11* 37
1000
P. R. J. WILLIS,
Agent for Applicant.