IMPROVEMENTS IN THE CONSTRUCTION OF SCREWING STOCKS
Year: 1879

page_text: "
LETTERS PATENT to Samuel Buckley, of Guide Bridge, in the County of
Lancaster, for the Invention of IMPROVEMENTS IN THE CONSTRUCTION OF
SCREWING STOCKS."
Sealed the 27th April 1880, and dated the 19th November 1879.
PROVISIONAL SPECIFICATION left by the said Samuel Buckley at the Office
of the Commissioners of Patents on the 19th November 1879.
SAMUEL BUCKLEY, of Guide Bridge, in the County of Lancaster. "IMPROVEMENTS
IN THE CONSTRUCTION OF SCREWING STOCKS."
This Invention relates to the construction of screwing stocks for holding and
working the dies used for cutting a screw thread upon screw bolts and upon gas or
other tubes.
The principal object of the Invention is to enable the dies to be changed more
expeditiously than hitherto and with less wear than by the old method of screwing
the forcing up or regulating screw the whole distance of the space where the dies
are put into the stock.
Into this space I fit a block turning over upon a hinge attached to the stock, and
into this block is tapped the forcing up or regulating screw, so that when the block
is in its place the head of the screw bears against the back of the "following" die.
It will be evident that upon slackening the screw the block can be turned over
upon its hinge, leaving the space clear for removing and changing the dies. In
order to prevent the block from falling out of place if the operator should turn it
wrong side downwards the pin of the hinge is made with a screw thread at its
end so that it can be tightened when the block has been put in place.
Another improvement consists in marking on the edge of the slot in which the
dies fit the proper position of the different sizes of dies, so that the die can be set
to its exact position at once without "trying."
Another improvement applies only to such stocks as are employed for screwing
steam, gas, or other tubes with taper dies and guides, the object being to enable
them to form the screw thread with only once screwing down.
I make the guide-nut with a long thread as the same pitch as the dies, and I fix
this guide-nut onto the tube near the end by means of a set screw or otherwise,
thus making it stationary.
When the guide is placed on the end of the tube and the thread of the guide nut
is entered into the internal screw of the guide the nut answers the purpose of a
leading screw, which draws the dies forward and ensures the correctness of the
pitch of the screw to be cut by the dies, and overcomes the difficulty of causing the
dies to commence their cut when the tube is larger than the size to be screwed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Buckley in the Great Seal Patent Office on the 18th May
1880.
SAMUEL BUCKLEY, of Guide Bridge, in the County of Lancaster."
IN THE CONSTRUCTION OF SCREWING STOCKS."
IMPROVEMENTS
This Invention relates to the construction of screwing stocks for holding and
working the dies used for cutting a screw thread upon screw bolts and upon gas
or other tubes.
The principal object of the Invention is to enable the dies to be changed more
expeditiously than hitherto, and with less wear and tear than by the old method of
screwing the forcing up or regulating screw the whole distance of the space where
the dies are put into the stock.
Such being the nature and object of my said Invention I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood
I have annexed hereunto a Sheet of Drawings illustrative thereof, and have marked
the same with figures and letters of reference corresponding with those in the
following explanation thereof.
Fig. 1 in the annexed Drawing is a face view, Fig. 2 an edge view, and Fig. 3 a
longitudinal section of a pair of screwing stocks and dies constructed according to
my Invention.
a, a, is the body of the stocks; and b, b, are the handles; c, c, is the space in
which the dies d, d, are fitted.
Into this space c, c, I fit a block e, e, turning over upon a hinge ff, attached to
'the stock a, a, and into this block is tapped the forcing up or regulating screw g, I,
so that when the block e, e, is in its place the head of the screw g, g, bears against
the back of the "following." die d¹. It will be evident that upon slackening the
screw g, g, the block e, e, can be turned over upon its hinge, as shown at Fig. 2,
leaving the space c, c, clear for removing and changing the dies. In order to
prevent the block e, e, from falling out of place if the operator should turn it wrong
side downwards the pin of the hinge f, f, is made with a screw thread at its end,
so that it can be tightened when the block e, e, has been put in place.
I would here remark that the hinge might, if preferred, be placed at the side so
that the block falls out in the reverse direction.
Another improvement consists in marking on the edge of the slot or space c, c,
in which the dies d, d¹, fit the proper position of the different sizes of dies, as
.shown at Fig. 1, so that the die can be set to its exact position at once without
"trying."
I would here observe that in my Provisional Specification I described as a
further improvement a device applicable to stocks employed for screwing steam,
gas, and other tubes, but as I have since been informed that the same was not new,
at the time of filing such Provisional Specification I hereby disclaim such device
as forming any part of my Invention.
Having now described the nature and object of my said Invention, together with
'the manner in which the same is to be or may be performed or carried into practical
effect, I wish it to be understood that I claim as my Invention, the construction
and application to screwing stocks of a hinged block, in the manner and for the

page_text: purposes herein before set forth and illustrated by the Drawing annexed; and,
secondly, I claim marking the proper position of the dies on the edge of the slot so
that the die can be set to its exact position without "trying."
In witness whereof, I, the said Samuel Buckley, have hereunto set my hand
and seal, this Fourteenth day of May, in the year of our Lord One thousand
eight hundred and eighty.
SAMUEL BUCKLEY. (L.S.)