Improvements in Sash Locks,
Year: 1892

page_text: Date of Application, 19th Apr., 1892-Accepted, 18th June, 1892
COMPLETE SPECIFICATION.
Improvements in Sash Locks,
I, GEROLT GIBSON, Lawyer, a Citizen of the United States of America, of
No. 325 Chestnut Street, Saint Louis, Saint Louis County State of Missouri,
do hereby declare the nature of my invention for IMPROVEMENTS IN SASHI LOCKS,
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 improvements in fasteners for windows; and my said
invention consists in certain details of construction and arrangement of the
parts as and for the purpose as will be hereinafter described, illustrated in the
accompanying drawings forming a part hereof and specifically pointed out in
the claim.
Referring to the accompanying drawings :
Fig. 1 is a front elevation of a portion of the lower rail of a window showing my
lock as applied in position thereon.
Fig. 2 is a view of the rear of the main portion of the lock, the same being
detached from the rail, and
Fig. 3 is a view of the locking catch that forms the other portion of the lock.
Fig. 4 is a vertical, sectional elevation, showing the lock in its locked position.
This lock consists of the two members A and B, hinged together as shown at a
and socket C, which socket is cut in the outer edge of the window sill.
The member A is secured to the lower rail of the window by screws that pass
through openings at the extremities of said member as shown at a'; and a
projection as at A' is provided to the part A that rests beneath the lower edge of
the window rail, as shown in Fig. 4. This member A also has two openings
formed through the front thereof as at A2 and A³, and the member B has a recess
as at B corresponding to the opening A2, and a lower extension B that terminates
in a hook-end B³ adapted to enter the opening A³ of member A.
The letter D indicates a casing at the rear of the member A having a spring d
that rests upon the back of the extension B³ of the member B and keeps the
hook B³ in its projected position.
A suitable opening is made in the lower rail of the window to receive the
casing D; and a hole is cut in the front edge of the window sill to receive the end
of the catch B³ of the member B, whereby the locking of the lower sash to the sill
is effected, and this by simply closing the window.
The window is thus locked against opening except upon the release of the
catch B³ from engagement with the socket C, and to effect such release of the latch,
in the act of raising the sash the finger is inserted through the opening A³ of the
member A and the member B forced back which releases the catch and allows
the window to be raised, the spring d reacting the catch to its normal position.
This lock is designed principally for use in connection with the lock for the
meeting rails of a window, forming the subject matter of a separate application for
a l'atent filed simultaneously herewith.
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
claim is:
The lock for the lower rail of a window, composed of the member A, having
onerings A and A', casing D at the rear, and spring d, forming part of said
casing, seated within the lower rail of the lower sash; and member B with offs 't a

page_text: hinged to the member A, recess B₁ and hook-end B³ adapted to pass through the
hole A of the member A and engage a keeper in the outer edge of the sill,
substantially as and for the purposes specified.
Dated this 25th day of February 1892.