MOD MUD MANUFACTURE OF CUT NAILS AND TACKS
Year: 1874

page_text: LETTERS PATENT to John Comery, of Birmingham, in the County of
"IMPROVEMENTS IN
Warwick, Machinist, for the Invention of
MOD MUD MANUFACTURE OF CUT NAILS AND TACKS."
Sealed the 11th May 1875, and dated the 5th December 1874.
PROVISIONAL SPECIFICATION left by the said John Comery at the
Office of the Commissioners of Patents, with his Petition, on the
5th December 1874.
I, JOHN COMERY, of Birmingham, in the County of Warwick,
Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR THE MANUFACTURE OF CUT NAILS AND
TACKS," to be as follows, that is to say :-
-
My Invention refers to an improved self-acting arrangement for
turning over the strips or rods from which the nails or tacks are to be
cut, and so as to avoid the necessity for hand turning. By my improve-
ments I also obtain a “rest” of the turn-over portions of the machine
whilst each blank is being cut from the strip or rod.

page_text: To operate or turn over the feed barrel containing the strip or rod I
employ an eccentric cam disc mounted on a countershaft held in brackets
attached to the gearing end of the machine, the eccentric cam disc being
actuated by a toothed pinion upon the main driving shaft engaging with
a cog wheel upon the countershaft of the eccentric cam disc.
In a groove cut in the face of the eccentric cam disc works a stud or
roller attached to a vertical arm which is connected to a cross shaft, this
cross shaft being also secured to a second vertical arm, to the free end of
which is attached a horizontal rod or bar situate upon the side of the
machine. This horizontal rod or bar is attached to a short vertical shaft
having two arms set at right angles or thereabouts to each other, the
lower arm carrying the horizontal rod with an universal joint, and the
upper arm being parallel with and under the feeding table which has a
cross slot for a stud attached to the upper arm of the short vertical
shaft to work in, the stud being also connected to a cross slide working
in V or other shaped grooves; the cross slide has a rack or set of teeth
for engaging with a small toothed pinion secured upon the end of the
feed and turn-over tube so that as the eccentric cam disc is actuated each
half of the circumference of the feed and turnover tube will be alter-
nately turned over and then back again, and consequently the reverse
side of the strip or rod presented for cach operation of the cutters.
In order to obtain a rest whilst the blank is cut off I regulate the
shape of the groove in the eccentric cam disc so as to obtain two
flattened parts, one on each side of the circumference of the groove and
in the revolution of the eccentric cam disc, when the stud or roller
comes to either of the flattened portions of the groove it will cease to
act upon the working parts operating the feed and turn-over tube until
the continuing revolution of the eccentric cam disc carries the stud or
roller past the flattened part, and another operation of the feed and
turn-over tube takes place between that point and the commencement of
the second flattened part of the groove.
For the purpose of accurately guiding the clamp bar carrying the
strip or rod down the feed and turn-over tube I prefer to arrange a pair
of horizontal side rods supported from the machine and also by one or
two under rods; upon these side rods is fitted a sliding plate working
freely up and down the side rods, and to which the clamp rod is attached
at will, the ends of the weighted cords or chains are secured upon each

page_text: side of the slide, so that when the machine is at work and the strip or
rod is passing down the feed and turn-over tube it will be steadily guided
to the cutters.
The sliding plate is held back by a spring catch to enable the empty
filed by the said John Comery in the Great Seal Patent Office on tho
5th June 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
COMERY, of Birmingham, in the County of Warwick, Machinist, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of December, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Comery, Her special
license that I, the said John Comery, my executors, administrators, and
assigns, or such others as I, the said John Comery, 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 MACHINERY FOR THE MANUFACTURE OF CUT NAILS AND TACKS," upon the
condition (amongst others) that I, the said John Comery, 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.

page_text: performed, to be particularly described and ascertained in and by the
following statement, that is to say :-
-
My Invention refers to an improved self-acting arrangement for
turning over the strips or rods from which the nails or tacks are to be
cut and so as to avoid the necessity for hand turning. By my improve-
ments I also obtain a rest of the turn-over portions of the machine whilst
each blank is being cut from the strip or rod.
I will now proceed to describe my Invention more fully in detail by
aid of the accompanying Drawings, reference being had to the letters
and figures marked thereon.
Fig. 1 is a side clevation of my improved machinery for making cut
nails and tacks, and Fig. 2 is a plan of the same as seen from above.
(a) is the feed barrel containing the strip or rod from which the nails or
tacks are cut, and to operate the feed barrel (a) I employ an eccentric
cam disc (6) shewn more clearly to an enlarged scale in side elevation,
Fig. 3, and section, Fig. 4. This cam disc (b) is mounted on a counter-
shaft (c) held in brackets (d) attached to the gearing end of the
machine, the eccentric cam disc (6) being actuated by a toothed pinion
(e) and the main driving shaft (f) engaging with a cog wheel (e¹).
Upon the countershaft (c) of the eccentric cam disc (b) is a groove (9)
cut in the face of the eccentric cam disc (6) and in which works a stud
or roller (h) attached to a vertical arm (i) which is connected to a cross
shaft (k), this cross shaft (%) being also secured to a second vertical arm
(2), to the free end of which is attached a horizontal rod or bar (m)
situate upon the side of the machine. This horizontal rod or bar (m) is
attached to a short vertical shaft (n) having two arms (¹) (n³) set at
right angles or thereabouts to each other, the lower arm (²) carrying the
horizontal rod (m) with an universal joint, and the upper arm (¹) being
parallel with and under the feeding table (o) which has a cross slot for a
stud (p) attached to the upper arm (n³) of the short vertical shaft (n) to
work in, the stud (2) being also connected to a cross slide (") working
in V or other shaped grooves; the cross slide (7) has a rack or set of
teeth (s) shewn more clearly in detail in Fig. 5, and this rack (s) engages
with a small toothed pinion (t) secured upon the end of the feed or
turn-over tube (a), so that as the eccentric cam disc (6) is actuated each
half of the circumference of the feed or turn-over tube (a) will be
alternately turned over and then back again, and consequently the
reverse side of the strip or rod presented for each operation of the

page_text: cutters. In order to obtain a rest whilst each blank is cut off I regulate
the shape of the groove (9) in the eccentric cam disc (6) so as to obtain
two flattened parts, one on cach side of the circumference of the groove
(g) and in the revolution of the eccentric cam disc (6) when the stud or
roller () comes to either of the flattened portions of the groove (9) it
will cease to act upon the working parts operating the feed or turn-over
tube (a) until the continuing revolution of the eccentric cam disc (6)
carries the stud or roller (h) past the flattened part of the groove (g) and
another operation of the feed and turn-over tube (a) takes place between
that point and the commencement of the second part of the groove (g).
For the purpose of accurately guiding the clamp bar (v) carrying the
strip or rod down the feed or turn-over tube (a) I prefer to arrange a pair
of horizontal side rods (20) supported from the machine and also by one
or two under rods (a); upon these side rods (10) is fitted a sliding plate
(10¹) working freely up and down the side rods (w) and to which the
clamp rod (v) is attached at will; the ends of the weighted cords or
chains (y) are secured upon cach side of the slide (w¹) so that when the
machine is at work and the strip or rod is passing down the feed or
turn-over tube it will be steadily guided to the cutters. The sliding
plate (') is held back by a spring catch (*) to enable the empty clamp
rod (v) to be removed and another holding a fresh strip to be placed in
its position.
Having thus described the object and nature of my said Invention,
and the manner in which the same is to be carried into effect, I claim,
without limiting myself to these precise details the improved self-acting
arrangement of parts for turning over the strips or rods from which the-
nails or tacks are made, together with obtaining a rest of such turn-over
parts whilst each blank is being cut from the strip or rod, substantially
in manner as herein more fully set forth and specified.
In witness whereof, I, the said John Comery, have hereunto
set my hand and seal, this Third day of June, in the year of our