Year: 1887

page_text: Date of Application, 13th Aug., 1887
Complete Left, 12th May, 1888
Complete Accepted, 29th June, 1888
We EDWARD ENGELS of Remscheid and BRUNO WESSELMANN of, Hamburg both
in the Empire of Germany do hereby declare the nature of this Invention to be as
follows
Our Invention relates to the tools which are well known under the designation of
screw stocks and has for its object to facilitate the use and to increase the adaptability
of such tools. We make the recessed portion of the stock which receives the. dies
open on one side and in the stock we form a slot or mortice into which one end of
each die enters and within which it is made a good fit. The bed die is secured by
means of a pin key or cottar or by suitable means the other die being hinged so that
it can be moved toward the bed die by means of a screw or the moving die may be
dovetailed into or secured to a jaw part which is hinged to the stock. A spring. may
be applied to separate the dies. In some cases the bed die is made reversible. In a
modification of the stock the bed die passes through the mortice and projects from
each side of the stock so that the bed die can be adapted to screw two or four different
sizes. The stock can be used as a pipe cutter by changing the bed die for a supporting
piece for the pipe and mounting a jaw piece carrying a cutting wheel in the place of
the movable screwing die.
1007
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Screw Stocks and Dies Convertible into a Pipe
Cutter.
We EDWARD ENGELS of Remscheid and BRUNO WESSELMANN of Hamburg both
in the Empire of Germany do hereby declare the nature of this Invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement and accompanying drawings :-
Our Invention relates to the tools which are well known under the designation of
screw stocks and has for its object to facilitate the use and to increase the adaptability
of such tools. We make the recessed portion of the stock which receives the dies
open on one side and in the stock we forin a slot or mortice into which one end of
each die enters and within which it is made a good fit. The bed die is secured by
means of a pin key or cottar or by suitable means the other die being hinged so that
it can be moved toward the bed die by means of a screw or the moving die may be
dovetailed into or secured to a jaw or part which is hinged to the stock. A spring
may be applied to separate the dies. In some cases the bed die is made reversible.
In a modification of the stock the bed die passes through the mortice and projects
from each side of the stock so that the bed die can be adapted to screw two or four
different sizes. The stock can be used as a pipe cutter by changing the bed dio for a
supporting piece for the pipe and mounting a jaw piece carrying a cutting wheel in
the place of the movable screwing die.
In order that our Invention may be clearly understood we will describe the same
more fully with reference to the accompanying drawings
-
In sheet 1 Figs. 1 and 2 represent a screwing stock constructed in accordance with
my invention the stock being represented with the handles broken off in this and the
other examples for want of space.
Fig. 3 illustrates a slight modification. In the said Figs. g is the central block in
which the dies are fitted s is the bed die and s is the movable die. The block g is
formed with a slot b into which pass one end of the bed dies and one end of a jaw a
to which the die s¹ is secured. If preferred the said die might be formed in one
piece with the jaw, but in the example it is secured in a dovetail groove in order
that it may be changed or renewed and that it may be removed from the jaw to be
ground. Figs. 4 and 5 illustrate two methods of securing the die, a pin t being
employed in the former case and a screw to in the latter. The bed dies is held in
position by means of a pin i. The jaw a is also secured by means of a pin &¹ but
differs from the attachment of the dies in that the said jaw is free to swivel upon its
pin. The pins i can be taken out when it is desirable to change the dies or either
of them. The dio ¹ can be moved toward the dies by means of a screw da tongue
spring for a spiral spring f¹ as preferred keeping the jaw a in contact with the end
of the screw or the use of a spring might be dispensed with.-The example illustrated
by Fig. 3 differs in the formation of the bed dies and also in the position of the
fulcrum of movement of the jaw a. In either case the stock is used in the ordinary

page_text: manner the die s¹ being set up by turning the screw d the centre of movement of
the dies being at i'. Figs. 6 and 7 on sheet 2 illustrate another modification. the
latter Fig. representing a cross section on the line A. B. in Fig. 6. In this example
the bed die s is formed to project from each side of the slot in the block g and is cut
with four sets of screw threads marked 1 to 4 so that four different sizes of bolts or
tubes can be screwed. When the threads 2 are to be used the pin iis taken out and
the jaw a is reversed so as to project from the other side of the block the die s¹ being
changed if the pitch of the two sets of screw threads differ. If the threads 3 or 4
are required the pins ii are taken out and the bed die is reversed. The bed die s in
Figs. 1 and 3 might be made reversible so as to screw two different sizes. Figs. 8
and 9 illustrate the method of using the stock as a pipe cutter. The screwing dies
are taken out and a support or bed m for the pipe is fixed in the place of the bed die. In
the place of the jaw a is applied a jaw a¹ carrying a cutting wheel & which is mounted
upon a pin e. Figs. 10 and 11 illustrate a modification in the method of mounting
the bed die s. In this example the said die is made to slide within the slot in the
stock and is adjustable by means of a set screw u which is carried by a shackle w
which is hinged to the stock by means of a removable pin 2. The end of the said
screw enters a hole bored in the die and is kept therein by means of a pin p. By
turning the screw the die can be adjusted in position so as to cause the edge of the
die s to bite with more or less of keenness. An important feature of our invention
is that the stock being open on one side can be applied to or removed from the object
to be screwed more readily than the ordinary stock, so that when the dies have been
screwed down upon the work as far as they will go the stock can be removed by
slackening the screw d without the ordinary necessity for screwing back.
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) The screwing stocks constructed as set forth and indicated hereinbefore and in
the accompanying drawings.
(2) In screwing stocks the combination of a fixed bed die with a hinged or jointed
movable die set up by means of a screw substantially as set forth and indicated.
(3) In screwing apparatus the stock open on one side and formed with a slot, the
fixed die secured by one end within the said slot the movable die carried by or formed
upon a jaw which is hinged within the said slot and is set up toward the work by
means of a screw substantially as set forth and indicated.
(4) The double screwing stock open at both sides and provided with a reversible
bed die and a hinged reversible movable die or die jaw substantially as set forth and
indicated with reference to Figs. 6 and 7 of the drawings.
(5) The screwing stock open on one side adapted to carry a bed die and a hinged
movable die which can at pleasure be changed for a tube support m and a hinged
jaw a provided with a tube cutting wheels' substantially as set forth and indicated
with reference to Figs. 8 and 9 of the drawings.
Dated this 11th day of May 1888
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.