A CERTAIN IMPROVEMENT OR IMPROVEMENTS IN MACHINERY FOR MAKING RIVETS AND SCREW BLANKS OR BOLTS,
Year: 1834

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
JAMIESON CORDES, of No. 6, Idol Lane, in the City of London, Merchant,
send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eighth day of October, in the fifth year of His reign, did,
for Himself, His heirs and successors, give and grant unto me, James
Jamieson Cordes, His especial licence, full power, sole privilege and autho-
rity, that I, the said James Jamieson Cordes, my exors, adiñors, and assigns,
or such others as I, the said James Jamieson Cordes, my exors, admors, or
assigns, should at any time agree with, and no others, from time to time and
at all times during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, my Invention of "A CERTAIN IMPROVEMENT OR
IMPROVEMENTS IN MACHINERY FOR MAKING RIVETS AND SCREW BLANKS OR
BOLTS," communicated to me by a certain Foreigner formerly resident abroad,
now deceased;" in which said Letters Patent is contained a proviso that I,
the said James Jamieson Cordes, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be per-
formed, to be inrolled in His said Majesty's High Court of Chancery within
six calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, 1, the said
James Jamieson Cordes, do hereby declare that the nature of the sail
Invention, and manner in which the same is to be performed, is described
and ascertained as follows (that is to say):-
The said machinery and the several parts thereof are exhibited in a certain
Drawing annexed to and forming part of this Specification, in which the
several parts are denoted and are herein-after further described by reference
to certain letters placed on or near the same, the same letters being every
where used to denote the same parts respectively. Two sides A of cast
iron, firmly bolted together by bolts B, form a frame on which the several
parts of the machinery rest. The principal parts of the machinery are made
of cast iron, fitted in the ordinary manner of metallic frames. Two move-
able caps or castings D are placed, one directly above the other, in an opening
in the front part of the frame A between the posts E, which are part of the
frame A. The lower cap rests on a tapering key or wedge, resting on a
cross bar that extends across the frame A. Four screws F pass through the
upper cap and press on the upper surface of the lower cap. By these screws
and tapering key the position of the caps is adjusted. These caps are secured
in their places by screws passing through two cross tightening bars G placed
between the upper cap and projecting shoulders from the posts E. The caps
carry two shafts C secured in sockets. A flutted roller (H) of steel or other
hard metal is fastened to a shoulder on each shaft, so that the two rollers are
directly opposite to and nearly in contact with each other. The thickness
of the rollers is regulated by the size of the flutings, which corresponds with
the size of the rivet, screw blank, or bolt required. The shafts (C) are
geared together by two equal toothed wheels, one upon each shaft. One of
the shafts here represented as the lower shaft carries also a catch or ratchet
wheel (L), ratched into as many divisions as there are screws, blanks, bolts,
or rivets to be made during one revolution of the fluted rollers. This wheel,
as here represented, is ratched not upon the face of the rim but on its exterior
side, and it is worked by a spring slide at the end of an alternating lever (K),
which moves freely on the shaft which carries the ratchet wheel. The other
end of this lever is connected by a rod (P) with a crank (Z) on the driving
shaft M. The driving shaft carries a fly wheel (Q) and pulley R, which
pulley is the first mover of the machine, and may be set in motion by any
convenient adjacent machinery. By the continued motion of the driving
shaft and crank, the lever, by means of the spring slide which is pressed
against the ratched side of the ratchet wheel by a spring concealed in the
end of the lever, forces it forward by one division, and in returning slips freely

page_text: round the shaft, while the spring slide slides over the inclined plane of the
ratchet wheel, and falls in behind the shoulders of the next division. Two
clasp levers (Y) are secured at one end in a clasp (S) by a spring (T), which
presses them against pins (U), which pass vertically through the clasp. The
two sides of the frame A are connected at the side farthest from the driving
shaft by a casting (V), to which the clasp (S) is firmly bolted. The clasp
levers are adjusted by screws passing through the casting (V), and clasp (S).
A pair of grooved holders (W), which I term heading holders, are screwed on
the clasp levers, and adjusted opposite to each other by screws.
The heading
holders are plain or countersunk, or otherwise shaped at the end farthest from
the fluted rollers, to fit the form of head required to be given to the screw
blanks, bolts, or rivets. Their length is the same as that of the screw blanks,
bolts, or rivets. A heading frame (X) slides on projections of the frame A,
and is connected by a rod and straps with a crank on the driving shaft (M).
The small end of the heading frame moves upon and between brasses supported
by a cross bar (a), which connects the two sides of the frame (A). A heading
punch (b) of steel or other hard metal is fixed in the heading frame, and so
adjusted as to have its centre directly opposite to the centre of the heading
holders. Its face is shaped according to the form of bead required to be
given to the screw blanks, bolts, or rivets. Two levers or toggles (c) are placed
within the heading frame (X), for the purpose of forming toggle joints to close
the clasp levers (Y). The toggles press at one end against semicircular
projections of the clasp levers, at the other end against pins passing vertically
through the heading frame. The toggles are kept in their place by plates (d)
pinned to them and to the heading frame, and formed with a slot at the other
end, through which pins, rising from the projections of the clasp levers,
traverse during the motion of the joints. The toggle joints close the clasp
levers when the heading frame recedes from the driving shaft, acting against
a spring (e) placed between the clasp levers, which forces them open again as
soon as they are relieved from the action of the toggles. As the heading
frame returns towards the driving shaft the clasp levers are prevented from
opening too far by adjusting screws or stops (f) screwed into them, and
pressing against the sides of the frame (A) when the clasp levers are open.
A tube (9), to direct the rod or wire, extends from the casting (V),
to which the clasp (S) is bolted, and leads directly to the fluted rollers.
The tube is again continued in the same direction, immediately beyond
the fluted rollers, the passage through which forms in some sort a connection
between the two parts of the tube. That part of the tube (9), which is beyond
the fluted rollers, turns on a joint (h). A bar (N) extends across between the

page_text: sides of the frame (A), and supports the end of the tube (9) beyond the joint.
The bar (N) turns at one end upon a pin (i), fixed to one side of the frame
(A), and is held up at the other end, which moves in a groove j, by a spring
(k). The action of this spring is to restore the bar (N), and tube (9), after
they have been depressed by the action of the striker herein-after mentioned;
the groove is secured vertically against one side of the frame (A). One end of
the spring () is made fast to the end of the bar (N), the other end to any
convenient part of one of the tightening bars (G); a plate (1), screwed to one of
the clasp levers (Y), projects over the tube (g) beyond the joint to prevent the
centre of the tube from being thrown above the centre line of the heading
holders by the reaction of the spring (k). A crank or cam (m) upon the
driving shaft is connected by a rod (n), with a casting or shear lever (o), hung
upon bearings (p), to which shear lever is bolted a chisel (9), with its cutting
edge (1) close in its cutting position to the heading holders. A striker (s) is
fastened to the shear lever in front of the chisel, but not extending quite so low
as its cutting edge. When motion is given to the machinery from the pulley
(R), and driving shaft, the end of a rod, which has been previously heated in
a furnace, is introduced into the tube (g) through a hole in the clasp casting
(V), and is brought into contact with the fluted rollers (H). It is drawn in
by them and passed on through the jointed continuation of the tube, and
between the heading holders, with the end of it projecting slightly beyond
them. It remains there at rest while the motion of the crank is completed,
and the alternating lever (K) returns to bring forward another division of the
ratchet wheel (L), meanwhile the heading holders, by the action of the toggle
joints on the clasp levers close on the rod. The heading frame moves towards
the heading holders, and the heading punch strikes up the head, at the same
time the chisel on the shear lever descends, cuts off the screw blank, bolt, or
rivet close to the heading holders, and acts as a stop to the divided part of the
rod while receiving the blow of the heading punch; as the chisel descends the
striker makes room for it by displacing the jointed end of the tube (g) with
the rod inclosed in it. When the chisel has been raised again by the continued
action of the crank on the driving shaft the spring (k) acting on the bar (N)
restores the tubes and rod to their first position. As the heading frame moves
back towards the driving shaft, the spring between the clasp levers forces them
open, and the finished screw blank, bolt or rivet is thrust out by another length
of the rod drawn into the tube.
I have thus described the several parts and motions of the improved
machinery which I use for the making of screw blanks, bolts, or rivets; I
shall now enumerate the parts and combinations of parts which alone I claim

page_text: as new, protesting that I do not claim as new, or seek to appropriate, under
colour of the said Letters Patent, any parts or combinations of parts of the
said machinery, or any manner of constructing or working the same, or any
part thereof other than is herein-after particularly claimed and specified.
I claim as new and seek to appropriate, by virtue and according to the
tenor of the said Letters Patent, the use and Invention of the combination
of the said chisel, used with the said heading holders, and the use and
Invention of the combination of the said tube used with the said fluted rollers
and said heading holders.
In witness whereof, I, the said James Jamieson Cordes, have here-
unto set my hand and seal, this Seventh day of April, in the year
of our Lord One thousand eight hundred and thirty-five.