An improvement or Improvements in Sash Fastenings.
Year: 1889

page_text: Date of Application, 17th ec., 1889
Complete Specification Left, 6th Feb., 1890-Accepted, 15th Mar., 1890
PROVISIONAL SPECIFICATION.
An improvement or Improvements in Sash Fastenings.
We ARTHUR BANKS LINFORD of No. 62 Prospect Terrace Wombwell, Surveyor
CHARLES LINFORD of No. 13 Park Street Wombwell, Carpenter and Joiner and
CHARLES HARRISON OXLEY of No. 76 Wombwell Main, Wombwell, all in the County
of York do hereby declare the nature of this invention to be as follows :—
The object of this invention is to effect the automatic locking of the jointed arm or
lover of the sash fastening when the said arm or lever is turned into its fastening
position and thereby prevent the pushing back of the said arm or lever and the
unfastening of the sushes by means of a knife or other instrument introduced between
the sashes from the outside of the window.
This object is effected simply and efficiently by the construction and combination
of parts hereinafter described.
The jointed arm or lever of the said fastening is made hollow or of a box form and
in the hollow or box of the arm or lever a spiral spring is placed the end of the said
spiral spring nearest the joint or centre of the arm or lever being fixed.
The other end of the spiral spring is attached to the end of a sliding bolt or bar
which bolt or bar is also placed within the said hollow box or jointed arm but towards
the knob or handle end of the same.
At or about the middle of the sliding bolt or bar and on its uppermost side a stud
or catch is placed which passes through a hole in the upper face of the arm or lever
and projects above the said arm or lever.
The knob or handle is fixed to the opposite end of the sliding bolt or bar to that
which is fastened to the spiral spring and passes through a hole in the upper face of
the arm or lever.
A portion of the "quadrant" or hook is removed on that side which comes in
contact with the said stud or catch fixed on the bolt leaving a depression or notch
suitable for the said stud or catch to take into.
When the jointed arm or lever is turned on its joint in the direction proper for
fastening the sashes the stud or catch on the sliding bolt or bar comes in contact
with the quadrant" or hook thereby forcing the bolt or bar back and extending the
spiral spring until the said stud or catch is brought into its fastening position when
the tension of the spiral spring draws back the sliding bolt thereby pulling or snapping
the stud or caich fixed on the said bolt into the depression or notel in the side of the
"quadrant" or hook.
The jointed arm or lever is thus locked in its fastening position.
In order to unlock the arm or lever for unfastening the sashes, the knob or handle
fixed on the sliding bolt or bar is pulled the stud or catch on the bolt being thereby
removed out of the depression or notch in the "quadrant" or hook thus unlocking
the jointed arm or levor which may be turned aside for unfastening the sashes.
Dated this Fourteenth day of December 1884
ARTHUR BANKS LINFORD.
CHARLES LINFORD.
CHARLES HARRISON OXLEY.

page_text: COMPLETE SPECIFICATION.
An Improvement or Improvements in Sash Fastenings.
We ARTHUR BANKS LINFORD of 62 Prospect Terrace Wombwell Surveyor, and
(HARLES LINFORD of 13 Park Street Wombwell Carpenter and Joiner and CHARLES
HARRISON OXLEY of 76 Wombwell Main Wombwell Fitter all in the county of York,
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 :-
Our present invention relates to sash fastenings which are constructed with jointed
arms, and has for its object the automatic locking of said arms when placed in a
fastening position thereby preventing the pushing back of the same by a knife or
other thin instrument introduced between the sashes from the outside of the window.
In order to attain this object in a simple and efficient manner we construct our
improved sash fastening in the manner set forth in the following description
aided by the accompanying sheet of drawings which are to be taken as part of this
specification and read therewith.
Fig. 1 is a sectional elevation of our improved fastening shown in a position with
the jointed arm locked and the sashes closed.
Fig. 2 is an elevation and fig. 3 is a plan of same.
Figs. 4, 5 and 6 are sectional elevations of various modifications of our improved
fastenings.
Like letters of reference designate corresponding parts in each figure.
Referring to figs. 1, 2 and 3 the jointed arm A is made hollow, or of a box form, in
which we place a suitable spiral spring B having one of its ends fastened or secured
to a fixed pin C, and its other end fastened to a sliding bolt or bar D which is also
placed or fitted within the jointed hollow arm A. The upper part of the bolt or bar D
has either made therewith or suitably attached thereto a stud, catch, or projection d¹
which extends through a slot or hole a¹ formed on the upper face of the arm A. A
suitable knob or handle E is secured to the end of the sliding bolt or bar D in a
vertical position by means of the stem e¹ which passes through a hole a³ formed in
the upper face of the jointed arm A.
Our improved fastening is made with the ordinary quadrant or book F which is
secured to the sash G in the usual manner, and it has formed in its side f¹ a suitable
notch wherein the projection or catch fits when the arm A is placed in fastening
position as shown at fig. 3.
The pivotted or jointed portion of the arm A is secured to a plate H and may be
either arranged with or without a spring J as desired, it is screwed or fastened to the
sash K in the ordinary way.
Referring to fig. 4, the spiral spring B is placed so as to be in compression instead
of in tension as shown at fig. 1. that is, it is placed between the end of bolt D and end
of arm A as shown.
Referring to fig. 5 the bar or bolt D is arranged with a cavity ³, and a pro-
jection a³ is formed within the arm A, by this means the spiral spring B may be
arranged to fit within the bolt or bar D, and
Referring to fig. 6 instead of a spiral spring being used a plate or curled spring B
is arranged with one end secured to lower part of handle or knob E and its other end
pressed within and against the end of arm A as shown.
Our improved fastening locks automatically as follows:
When the jointed arm A is turned in the direction for fastening the sashes G
and K the projection or catch d' comes in contact with the edge of quadrant or
hook F thereby forcing the bolt or bar D back and either extending (fig. 1) or
compressing (figs. 4, 5 and 6) the spring B until the projection or catch d² is brought
to the notch when it is drawn or forced therein by the aid of said spring B, so
that by this means the fastening becomes automatically locked, and the pushing back
of the arm A by means of a knife or other thin instrument introduced between the

page_text: sashes K an IG from the outside of the window is prevented. In order to unlock
the arm A so as to release the sashes it is only necessary to pull the knob or handle in
the us. al way when simultaneously the projection or catch d¹ is removed from the
notch and the arm may be turned back to the unfastened position as will be well
understood.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In a sash fastening made with a hollow jointed arm A the use of a sliding bar D
having a projection or catch d' and held by a spiral spring B, in combination with a
notch formed in the quadrant F substantially as described and illustrated and used
for the purpose specified.
2. In a sash fastening made with a jointed arm A the use of a sliding bar D having
a projection or catch and held in position by a spring B in combination with a
notch substantially as shown at fig. 4.
3. In a sash fastening made with a jointed arm A the use of a sliding bar or bolt D
having a catch d' and held in position by a spiral spring B substantially as described
and illustrated at fig. 5.
4. In a sash fastening made with a jointed hollow arm A the use of a catch d' held
in position by a flat or curled spring B substantially as described with reference to
fig. 6 of the accompanying drawings.
5. Fastening the knobs or handles E of sash fastenings made with an arm A to
sliding bars or bolts D so that the unlocking of the fastening is simultaneously per-
formed with the turning of said arm A to unfastening position substantially as
described and illustrated in the drawings annexed.
Dated this 5th day of February 1890.
H. F. BOUGHTON, M.I.M.E.,
Barnsley and Sheffield, Agent.