IMPROVEMENTS IN THE CONSTRUCTION OF FASTENERS FOR WINDOW SASHES."
Year: 1872

page_text: LETTERS PATENT to Alfred Wilmer Pocock, of Pimlico, in the County
of Middlesex, Engineer, for the Invention of “IMPROVEMENTS IN
THE CONSTRUCTION OF FASTENERS FOR WINDOW SASHES."
PROVISIONAL SPECIFICATION left by the said Alfred Wilmer Pocock
at the Office of the Commissioners of Patents, with his Petition,
on the 13th February 1872.
I, ALFRED WILMER POCOCK, of Pimlico, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN THE CONSTRUCTION OF FASTENERS FOR WINDOW SASHES," to be as
follows:-
This Invention relates to the construction of sash fasteners in which a
bolt is employed for entering into a box or chamber fitted upon one
sash, and of a barrel in which the bolt is free to turn when acted upon
by a lever, the barrel being upon the other sash.
I propose to fit a socket or box upon say the upper
sash, into which
a bolt of parallel or tapered form can enter, the bolt having a pin or
stud upon it for riding in a groove or slanted notch in a barrel in which

page_text: the bolt is fitted.
The outer end of the bolt is provided with a knobbed
lever to turn it by, the shoulder or body of the lever having a claw or
wiper for depressing and catching a spring to be held secure. In lieu
of the lever being on the end of the bolt, the pin or stud may be
extended to act as such.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alfred Wilmer Pocock in the Great Seal Patent
Office on the 13th August 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
WILMER POCOCK, of Pimlico, in the County of Middlesex, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of February in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alfred Wilmer Pocock, Her special
licence, that I, the said Alfred Wilmer Pocock, my executors,
administrators, and assigns, or such others as I, the said Alfred Wilmer
Pocock, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF FASTENERS FOR WINDOW SASHES," upon
the condition (amongst others) that I, the said Alfred Wilmer Pocock,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alfred Wilmer Pocock, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say :-

page_text: This Invention relates to the construction of sash fasteners in which
a bolt is employed for entering into a box or chamber or upon a plate
fitted upon one sash, and of a barrel in which the bolt is free to turn
when acted upon by a lever, the barrel being upon the other sash.
I fit a socket or box upon say the upper sash, into which a bolt of
parallel or tapered form can enter, the bolt having a pin or stud upon
it for riding in a groove or slanted notch in a barrel in which the bolt
is fitted. The outer end of the bolt is provided with a knobbed lever
to turn it by, the shoulder or body of the lever having a claw or wiper
for depressing and catching a spring to be held secure. In lieu of the
lever being on the end of the bolt the pin or stud may be extended to
act as such.
The Invention will be understood by referring to the accompanying
Sheet of Drawings, in which Figure 1 shows the fastener in plan; the
part a in or to which the barrel b is secured or forming part of is
capable of attachment to the top rail of the lower sash c by screws d, d.
The barrel has a slanted notch across its upper part for a pin or stud e
on the bolt to ride in, when the hand lever g is turned over to the
right or to the left as desired, one movement being for the fastening
and the other for the unfastening. The inner end of the lever is formed
with a wiper h, which in turning the lever over to fasten the sashes
causes the spring i to become depressed until the tooth j passes it, when
the spring rises by its own tension and abuts against the tooth to hold
the levers secure. This is represented in a clear manner in Figure 2,
which is a face view of the lever and barrel, the lever having a knob k
to facilitate the operation of moving it by hand. The spring is fixed
at its back end by a rivet, as seen in the sectional view Figure 3, and its
outer end is free so that the wiper can act upon and depress it for
securing the bolt f, and by the finger to depress it below the corner of
the tooth previously to moving the lever over to unfasten the sashes.
The bolt can be made parallel throughout its entire length as in
Figure 3, and of either solid or hollow metal, or it may be of two
diameters as in Figure 4, one for working in the barrel and the other to
enter the socket 1, fixed on the bottom rail m of the top sash by its
screws n, 1.
Figures 4 and 5 show respectively a plan and end view of a modi-
fication. Here the bolt barrel is upon the bottom rail of the upper sash
or plate or the socket upon the top rail of the lower sash, the lever g

page_text: acting not only as the means of moving the bolt, but also as a stud for
traversing the slot, one side of the barrel b in this case is flat for
the spring i to bear against when the lever is pulled over to fasten the
sashes, but which can be lifted clear by the finger of the operator
depressing its button or projecting end p in the act of gripping the lever
to throw it over to unfasten.
In both the above arrangements the spring i is exposed more or less,
but it may be fitted in the inside of the bolt as shown in Figures 6
and 7, if desired, the spring acting upon the long arm 7 of a catch pinned
to a cap r which can be pushed in a slight distance, whereby the catch
proper s is tilted out of its aperture in the base plate a by its free end t
bearing against the solid part of the bolt.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I claim,―
Firstly. The construction and employment of the apparatus herein-
before described and shewn in Figures 1, 2, and 3 of the accompanying
Drawings.
Secondly. The modification as herein-before described and shown in
Figures 4 and 5 of the accompanying Drawings.
And, thirdly. The modification as herein-before described and shown
in Figures 6 and 7 of the accompanying Drawings.
In witness whereof, I, the said Alfred Wilmer Pocock, have here-
unto set my hand and seal, this Thirteenth day of August One
thousand eight hundred and seventy-two.