Year: 1887

page_text: Date of Application, 3rd Oct., 1887
Complete Left, 4th May, 1888
Complete Accepted, 8th June, 1888
1, ROBERT PLATT 25 Union Street Hyde, Cheshire near Manchester Whitesmith do
hereby declare the naturo of this invention to be as follows:-
That it can be applied to any Quadrant or Segmental Window Sash Fastener.
The novelty, of my Invention is the more perfect securing of the Horizontal
Moveable Lever of the said Sash Fastener which secures the upper and lower rails of
the window, and for the better securing of the said window from being opened from
the outside, and also to retain them perfectly close when shut in their position.
The said Horizontal Moveable Lever, c, is fastened to the lower rail of the upper
window Sash, and a corresponding Quadrant or Segmental Rack, d, on the upper rail
of the lower window Sash.
.
In the above Horizontal Moveable Lever, c, there is a T or other suitable shaped
groove or slot, at the end nearest the knob or Handle, e, and into which said groove
or slot fits a corresponding T or other suitable shaped Quadrant or Segmental
Rack, d.
Also in the above named Horizontal Moveable Lever, c, is cut or cast a slot or
groove, which is a continuation of the other already formed T or other suitably shaped
groove or slot, and in which fits, or works a Catch, a, which is secured to the Knob.
or Handle, e, by a vertical pin passing through same, thereby causing the Knob or
Handle, e, and the said Catch, a, to be united together.
The above named Catch, a, is so made as to fit in suitably made Notch or Notches
cut or cast in the upper outer vertical surface of the said T or other suitable shaped
Quadrant or Segmental Rack d, and behind which said Catch, a, is fixed or secured a
Spring, b, which acts directly against it, so that it is forced in one of the above named
Notch or Notches, cut or cast in the Quadrant or Segmental Rack, d, automatically
when the above Horizontal Moveable Lever, c, is pulled over the Quadrant or Segmental
Rack, d.

page_text: ROBERT PLATT 23 Union Street Hyde Cheshire Whitesmith, 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:-
The object of my Invention is, that it can be applied to any Quadrant or Segmental
Window Sash Fastener, and the more perfect securing of the Horizontal Moveable
Lever of the Sash Fastener which secures the Upper and Lower Rails of the Window,
and for the better securing of the said Window from being opened from outside, and
also to retain them.perfectly close when shut in their respective places.
And in order that my Invention may be properly understood with respect to
carrying the same into practice or use, herewith supply Drawings showing the
different views, and in which will be found reference letters used to indicate the
several corresponding parts in all the Figures where shown.
Figures 1 and 2 are perspective views showing my new or Improved Sash Fastener
for Windows, applied to secure the Upper and Lower Rails F F of the Lower and Upper
Sashes of a Window respectively.
Figures 3 and 4 show an elevation and plan respectively to an enlarged scale. of my
Improved Sash Fastener shown in Figure 1.
Figures 5 and 6 show an elevation and plan respectively to an enlarged scale of my
Improved Sash Fastener shown in Figure 2.
The nature and novelty of my Invention on referring to the Drawings consists in
fastening in the usual manner by screws B' on the Upper Rail of the Lower Sash of
the Window a horizontal plate G' on which is cast or otherwise fastened a T or any
other shape or design of Horizontal Segmental Rack D, having a suitable made Notch
or Recess A¹ cut or cast on its outer vertical face or edge as shown in Figures 3 to 6
inclusive respectively.
The Lower Rail F of the Upper Sash which when both Sashes are in their usual
position when perfectly closed is on a level with the top of the Under Sash of the
Window, has fastened in the usual manner by Screws B' a corresponding plate G,
having a vertical shaped flange G2 on its outer side, and to the inside of which
flange is fastened a spring H.
One end of the Horizontal Moveable Lever C, is secured to a horizontal hinge on
plate, G. G by means of a vertical pin H which passes through an eye formed out of
the Top Flange G2, and secured to the screwed plate G¹ below, with projecting heel or
elbow I and anti-friction bowl I behind, and Stop Lip or Arm L, which parts, jointly
holds the Horizontal Moveable Lever C in its extreme inward and outward positions
respectively.
The Tor other suitable shaped recess C" in the Horizontal Moveable Lever Ċ which
is formed on its underside at the end nearest the knob or handle E, which slides over
the Quadrant or Segmental Rack D fitted on the plate G of the Upper Rail F1 of the
Lower Window Sash and grip it to hold the two Window Sashes perfectly close

page_text: together, the one up, and the other down firmly secured in their respective places, and
keep the wind from shaking them.
In the Tor other suitable shaped recess C¹ of the Horizontal Moveable Lever C
is a catch A, which is fastened and works along with the knob or handle E, by
means of the vortical pin B, the point of which Catch A corresponds with the
Notch or Recess A' cut or cast in the Quadrant or Segmental Rack D.
Behind the Catch A and in the T or other suitable shaped recess c¹ is secured a
small spring K, or otherwise, which forces the Catch A automatically in the Notch or
Recess A cut or cast in the Quadrant or Segmental Rack D, and held firmly in this
position until released by a slight turn of the knob or handle E, which can only be
turned one way, and that is in an outward direction.
Or otherwise if more preferable the Catch A, can also be forced automatically into
the Notch or Recess A, by a slight alteration in the form or shape of the stop or
vertical flange of the Quadrant or Segmental Rack D. by being carried out longer as
shown in Figure 6, and by a corresponding slight alteration in the form or shape of
the Catch A, also shown in Figure 6, which alterations entirely does away with
spring K shown in Figure 4, the spring H shown in Figures 4 & 6 answering both
purposes.
When the Window Frames or Sashes are to be fastened or secured at their Upper
and Lower Rails F F¹, the Horizontal Moveable Lever C is moved by means of the
knob or Handle E from its position parallel to the bottom of the Upper Window
Sash F until it passes over and is held in its position by the Catch A of the Horizontal
Moveable Lever C, falling or forced automatically into the Notch or Recess A¹ of the
Quadrant or Segmental Rack D. on the top of the Lower Window Sash F and thereby
held firmly or locked in this position.
When the Window Frames or Sashes are to be opened the knob or handle E of the
Horizontal Moveable Lever C. is to be slightly moved or turned in a outward direction,
which causes the Catch A to be releived or brought out of the Notch or Recess A¹, in
the Quadrant or Segmental Rack D, and moved directly over to its extreme limit on
the Bottom Rail of the Upper Window Sash F thereby causing either the Bottom or
Upper Window Sash to be moved up or down at leisure.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed declare that what
I claim is :-
1. The construction of Sash Fasteners for Windows, with Catch A, Spring K
Horizontal Moveable Lever C, Knob or Handle E, substantially as and for the purpose
herein set forth.
2. The construction of Sash Fasteners for Windows with Quadrant or Segmental
Rack D, having a Notch or Recess A¹ cut or cast in its outer vertical edge, substantially
as herein for the purpose set forth.
3. The construction of Sash Fasteners for Windows with approved shape or design
of Catch A, substantially as and for the purpose herein set forth.
4. The construction of Sash Fasteners for Windows with approved alteration in the
form of the vertical or stop flange of the Quadrant or Segmental Rack D. being made
slightly longer, substantially as herein described in reference to and shown in the
accompanying Drawings.
2 L
35
1000
ALBERT BIRCH,
Agent for Robert Platt.