Improvements in Presses for Pressing and Forming Bolts, and for an Improved Die employed therein.
Year: 1890

page_text: Date of Application, 7th Aug., 1890
Complete Specification Left, 5th May, 1891-Accepted, 20th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Presses for Pressing and Forming Bolts, and for an
Improved Die employed therein.
I, EDWARD HOLLINGWORTH, of Dobcross Loom Works, Dobcross, in the
County of York, Loom Maker do hereby declare the nature of this invention to be
as follows (which invention has been communicated to me from abroad by George
Webb of Pawtucket, Rhode Island, one of the United States of America,
Engineer):-
This invention has reference to presses specially adapted for pressing and
shaping bolts after they have been forged.
In this class of machine, the pressing or squeezing head carrying the die is
caused to reciprocate vertically by strong arms actuated by eccentrics. The
pressing die is attached to a vertical screw capable of adjustment to meet the
requirements of the varied sized heads of bolts under operation, such screw working
through a nut secured by set screws or bolts to the top of the machine, the object
of using this detachable nut and set screws or bolts being to ensure that in case
extra or undue pressure is brought upon the press, such bolts or set screws would
break or give way before other parts of the press, consequently less damage would
be done to the machine by the breaking of the screws than would be the case if
other parts of the press gave way. Underneath the press is a sliding block which
carries the die employed to form the underside of the bolt head, and in order to
ensure that the centre of the bolt will always come exactly under the centre of the
press, an adjusting screw is employed against which the sliding plate abuts, and
every time a bolt is placed under the press, such adjusting screw makes sure that
the bolt is in the exact position required for pressing.
The die in which the bolt is placed for being pressed is made in two parts, so
that when the upper part, (where the most wear and tear takes place,) becomes
worn, it can be removed and a new one substituted, and this can be done without
any damage to the lower part. We also employ a loose pin placed vertically in
the said die, the bottom of which projects below the die cach time a bolt has been
pressed, so that on the attendant knocking the bottom of the loose pin upward, the
bolt is loosened in the die and is easily removed therefrom. A flat plate is formed
on or attached to the front of one or both of the vertical arms employed to
reciprocate the press, so that each time the workman seizes hold of a newly formed
hot bolt with his pliers or pincers, he knocks the said bolt against the flat plate to
assist him in getting the bolt into a suitable vertical position so as to permit him
to quickly insert the point of the bolt into the die. A water trough is also placed
in a convenient position near the die to cool the bolt after being pressed.
Dated this 6th day of August 1890.
TASKER & CROSSLEY,
Huddersfield, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Presses for Pressing and Forming Bolts, and for an
Improved Die employed therein.
I, EDWARD HOLLING WORTH, of Dobcross Loom Works, Dobcross, in the
County of York, Loom Maker, 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 (which invention has been com-
municated to me from abroad by George Webb, of Pawtucket, Rhode Island, one
of the United States of America, Engineer) :-
This invention has reference to presses specially adapted for pressing and
shaping bolts after they have been forged, my improvements therein consisting of
an adjustable pressing spindle and breakable nut, together with an adjusting set
screw for determining the position of bolt under operation also of an improved
die, and a plate for the workman to push against it a hot bolt, to enable him to get
it into an upright position, previons to inserting it into the pressing die.
:
In order that my invention may be better understood, I will now make reference
to the accompanying sheets of drawings, wherein
Fig. 1 is end elevation of the improved press,
Fig. 2 front elevation of same, and
Fig. 3 section of my improved die shewn on an enlarged scale.
A represents the framework or standard of the machine, B the pressing or
squeezing head made to reciprocate vertically by means of strong connecting
arms Cactuated by eccentric on the main driving shaft D, driven by strap
passing over fly wheel E. The upper part of the standard or framework A is pro-
vided with V or other suitable form of slides to keep the pressing head in its
place, and to permit of the necessary sliding motion given to the pressing head.
The pressing cup or die F is attached by any suitable means to the vertical
screwed spindle Gr, the screwed part of which passes through a strong nut H, which
permits the length of the spindle being adjusted to suit different sizes of bolt heads
under operation. The nut H is secured to the top of the pressing head B by
means of set screws I, so that if any extra or undue pressure, by accident or other-
wise is brought upon the press, such set screws or bolts I would break or give
way before other parts of the press, consequently, less damage will be done to the
machine by the breaking of the set screws than would be the case if other parts of
the press gave way.
Underneath the pressing head B is a table J on which rests a sliding block K
made to receive and carry the die L used to form the underside of the bolt M, and
in order to ensure that the centre of the bolt will always come (each time the die
is placed under the press) exactly under the centre of the pressing cup, an adjusting
screw N is employed (shewn more clearly in Fig. 3) against the head of which, the
sliding plate is made to abut every time a new bolt is placed under the cup, by
which means the bolt is readily placed into the exact position for pressing. It is
evident that any form of stop piece would answer the same purpose as the set
screw, but this is preferred, as it can be adjusted to meet the wear of the parts
which takes place in time.
The die in which the bolt is placed for being pressed, is connected to the handle O,
whereby it can be lifted in and out of the sliding plate K as and when required.
This die is made in three parts, L, L', and L2, so that when the upper part L
(where the most wear and tear takes place) becomes worn, it can be removed and
a new one substituted, and this can be done without any damage being done to the
lower parts. A loose pin l' is also employed and placed vertically in the said die,
the bottom of which projects below the die, so that on the attendant knocking the
bottom of the loose pin upward, the newly pressed bolt is loosened in the die and
can be readily removed therefrom.

page_text: A flat plate R is formed on or attached to the front of one or both of the
vertical arms C, and this is found of great advantage to the workman, as each time
he seizes hold of a newly formed hot bolt with his pliers or pincers, he knocks the
said bolt against the flat piate R to assist him in getting the bolt into a suitable
vertical position so that he can more quickly insert the point of the hot bolt into
the die. A water trough S is placed in front of the machine to cool the bolt after
being pressed. Cold water is fed to the trough by pipe T, whilst U represents the
overflow pipe.
The machine as herein described, works very steady and with great power;
means are also provided for adjusting position of the die under the press and for
renewing the wearing parts of the said dic, whilst the use of the nut H prevents
any serious breakage taking place in the machine beyond the nut itself and the set
screws I.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
Firstly. In a machine for pressing bolts, the use of a reciprocating pressing head
in combination with an adjustable pressing spindle, having a breakable or moveable
nut for purposes set forth.
Secondly. In a machine for pressing bolts, the use of an adjusting set screw
such as N employed for purposes set forth.
Thirdly. In a machine for pressing bolts, the use of a detachable die such as L,
L, L, in combination with an "upsetting" pin P for purposes set forth.
Fourthly. In a machine for pressing bolts, having a reciprocatory pressing head,
and an adjustable pressing spindle and moveable nut, the combination therewith of
a plate such as R, for purposes set forth.
Dated this 4th day of May 1891.
TASKER & CROSSLEY,
Market Place, Huddersfield, Agents.