Improvements in Window Catches.
Year: 1894

page_text: Improvements in Window Catches.
I, EDWIN OLIVER READ, of 36 Broad Street, in the City of New York, State
of New York, U.S.A, Stock Broker, do hereby declare the nature of my invention
and in what manner the same is to be performed, to be particularly described and
Bscertained in and by the following statement -
This invention relates to improvements in window catches, and provides a cheap
and efficient catch, which 19 difficult of reach to a person attempting to open a
window from the outside, and yet does not mar the window casing or frame.
Referring to the diawings which accompany the Specification to aid the
description,
Fig. 1 is a perspective view of the catch in the locked position, omitting the
socket or thimble which is engaged by the head of the catch.
Fig. 2 is a sectional elevation, as on the line of Fig. 1, but showing the upper
and lower sashes in broken view and the socket for the head of the catch.
Fig. 3 shows the same parts as Fig. 2, but in the open position.
The drawings show the catch applied to windows of which both sashes are
movable The catch A, of any suitable material, and shaped as shown, has a head a,
adapted to enter a socket or thimble B, secured to the side of the frame of the
upper sash
When only the lower sash is movable the socket B may be secured
to the bend which separates the two sashes, or to the upper sash.
The catch A has a thumb piece C, and is pivoted at its lower end in ears d d on
a plate D, which is screwed to the top of the lower sash behind the stile of the
upper sash, out of reach of any tool that may be worked up the joint between
the two sashes. The lower end of the catch A has angled cam-surfaces, e, j, as
shown, one of which bears on the spring G when the catch is engaged into its
socket B and the other bears on said spring G when the catch is turned back,
(Figs. 2 and 3). The plate D is beveled at d' as shown, to afford play to the
spring G. Said spring G holds the catch firmly in the locked position, and
prevents forcing it out of the socket B by shoking the sash W or W
When used with windows whereof both the upper and lower sashes movo the
catch locks both sashes. If desired, in all cases there may be additional thimbles
at various heights to retam the lower sash in any raised position.
Having now particularly described and ascertained the nature of my said inveu-
tion, and in what manner the same is to be performed, I declare that what I
claim 18:-
In a window fastener, the combination of a socket, an arm provided with a head
that is adapted to enter said socket and said an being pivoted at its lower end to
A base plate, cam-surfaces ef on the lower end of said aim arranged at an angle to
each other and said cam-surface e also arranged at an angle upwardly and outwardly
with said arm, a flat spring pivoted on said base plate and having an end adapted
to be engaged by said cam-surfaces e faccording as the catch is in the vertical or
the horizontal position respectively and said spring also being adapted to force
said arm outwardly from the perpendicular and to press said head into said socket,
substantially as described.
Dated this 31st day of December 1894.
S. 8. BROMHEAD,
97, Newgate Street, London, E.C, Agent for Applicant.