Improvements in Machines for Making Horse-shoe Nails.
Year: 1897

page_text: Date of Application, 16th Aug., 1897-Accepted, 12th Mar.,
1898
COMPLETE SPECIFICATION.
Improvements in Machines for Making Horse-shoe Nails.
I, BENJAMIN JUDD ABBOTT, of No. 7412, Adams Avenue, in the City of Chicago,
in the County of Cook, State of Illinois, United States of America, Engineer, 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:
My invention relates to improvements in machines for automatically forming
horse nail blanks from a continuous rod, and delivering the same in a proper shape
for the subsequent pointing and finishing. The invention consists in the novel
devices and novel combinations of parts and devices herein shown and described
and more particularly pointed out in the claims.
In the accompanying drawings, which form a part of this specification, and in
which similar letters of reference indicate like parts throughout the several figures,
Fig. 1 is a front elevation of the machine; Fig. 2 is a side elevation of the same;
Fig. 3 is a rear elevation of the machine; Fig. 4 is a horizontal section on the
line 4-4 of Fig. 1; Fig. 5 is a sectional plan on the line 5-5 of Fig. 1; Fig. 6
is a section on the line 6-6 of Fig. 2; Fig. 7 is an enlarged elevation of the blank
cutters; Fig. 8 is a sectional view of a part of the same; Fig. 9 is a section on the
line 9-9 of Fig. 7; Fig. 10 is a section on the line 10-10 of Fig. 7; Fig. 11 is
a section on the line 11-11 of Fig. 7; Fig. 12 is a sectional view of the guide
tube and blank cutting mechanism taken on the line 12-12 of Fig. 7; Figs. 13,
14, 15, 16, 17, 18 and 19 are detail views illustrating the die rolls, the feed passages
and the stop mechanism connected therewith. Figs. 20, 21, 22, 23, 24, 25, 26,
27, 28, and 29 are details of the turn plate mechanism. Figs. 30, 31, 32, 33, 34,
35, 36, 37, 38 and 39 are details of the heading die.
It will be noticed that all of the several features and parts of the mechanism in
this machine are so contrived and designed that those parts which operate upon
the nail rod or the blanks made therefrom may be multiplied in the machine
without interference with their operation, so that not only one but several-two
or more-nailrods may be fed at once into the machine, and the driving gears, die
carrying parts and other like parts of the machine are single. By this means,
without material increase in the size and cost of the machine, its capacity may
be vastly augmented. It will be noticed also, as the description proceeds, that
the construction of the active parts is simple, so that these parts may be made both
strong and durable.
In the machine chosen for illustration in the drawing the construction is one
designed to operate upon two nail rods simultaneously, the knives for severing the
blanks from the rods, the forming dies and the heading mechanism being all
duplicated. In like manner, if desired, these parts may be triplicated or quadru-
pled, without any change in the structure otherwise.
In the said drawings A A are the nail rod reels, upon each of which is coiled
a supply of nail rod a. AA is a pair of driven feed rolls, set close enough
together to grip the nail rods with sufficient force to pull the same from the reel.
Interposed between the feed rolls are three straightening rolls all of which are

page_text: idlers, and two of which, viz. the rolls A2 A2 are placed one above the other,
while the third roll A3 stands midway between the other two and at one side.
This third idler, A³ is mounted on the vertical arm of the bell crank lever A+,
pivoted to the frame of the machine. On the horizontal arm of this bell crank
lever is an adjustable or sliding weight A³. The nail rod passes between these
three rolls and the curvature due to its having been coiled on the reel is removed.
The pressure of the swinging idler A³ may be increased or diminished as desired
by moving the sliding weight A5 out or in upon the horizontal arm, and just that
degree of pressure obtained which the condition of the nail rod shall require.
The
Below the feed rolls A' A' is the mechanism for severing the blank from the nail
rod (see Fig. 1 and the enlarged views at Figs. 7, 8, 9 and 10). Clamped in a
suitable yoke is the knife B forming the stationary part of the cutting apparatus.
And clamped in a similar suitable yoke mounted upon a reciprocating carriage B2
is the countering knife B', constituting the movable portion of the cutter.
carriage 12 is fitted to move in slide ways B³, and the same is moved with a to and
fro movement by means of the pitman 134 and eccentric B³, the latter receiving its
movement from a shaft operated by the gearing of the machine, which shaft and
its relation to the other gearing is shown in the drawing, and will be understood
without description. Mounted in the carriage B2 and just beneath the cutter B³ is
the blank holder 136, which is movable, the same being pressed forward normally
by the spring 137. The front end of this blank holder, B6, is forked or divided into
two parts 138, 138, which parts extend across the path of the nail rod leaving an
opening through the holder at all times for the nail rod to pass; so that the blank
severed by the knife may pass through this opening and be prevented from slip-
ping to one side or the other, or getting out of position. When the carriage moves
the knife B forward the body of the holder B6 comes into contact with the nail
rod preferably a little in advance of the contact of the moving knife with said rod,
and as said knife passes on severing the rod said holder yields on its spring 137
remaining in contact until the blank is severed, and when said blank is severed
the spring pushes the severed blank over against the wall of the stationary knife
block and holds it there momentarily as the carriage of the movable knife retreats,
until finally said holder is released from the blank permitting the latter to fall into
the guide way, presently to be described. By this arrangement the blanks are
rapidly severed from the nail rod and pushed into position to pass into said guide
way. The length of the blank cut from the nail rod is determined by a fixed
stop B against which the end of the nail rod strikes as it is fed down. When
the end of the nail rod strikes this stop the further feeding of it is prevented, the
feed rolls slipping on the rod while the blank is being severed and pushed to one
side by the holder as above described. The moving knife B' will itself prevent
the feed rolls from forcing the rod down until this knife is out of the way. The
operation of severing the blank is briefly as follows: The feed rolls force the nail
rod down until its end comes in contact with the stop B. Then the moving knife
comes up and severs the blank from the rod, and the holder, as above described,
guides and holds the severed blank and pushes it off from the stop and over the
guide passage, and releasing it permits the blank to fall into said guide passage.
In the meantime the knife has retreated first and then afterwards the holder
retreats leaving the way clear for the further feeding of another length of rod
down in contact with stop 19. It will be noticed that the movement of the
holder B6 insures that the lower instead of the upper end of the severed blank is
always carried over first, so that the tendency to clog which would exist if the
upper end fell over first is prevented.
The connection between the eccentric and the knife carriage is peculiar, and
designed to prevent lost motion by wear, so that certainty of action in both direc-
tions is assured. It will be seen by reference to Fig. 7 that the pitman B* is
connected to the rectangular frame work by a knuckle joint B10. The strap of
the eccentric at 13" farthest from the pitman is formed in the arc of a circle struck
from the center of the knuckle B10, and bears against a shoe B¹ struck on the same

page_text: arc.
And it will be noticed by reference to Fig. 11 that the pitman rod B' is made
in two parts or pieces, each of which is screw threaded, the two pieces being screw
threaded in opposite directions, and a nut B313 encloses these two parts so that by
turning said nut in one or the other direction it is lengthened or shortened. By
this arrangement the bearings on the eccentric and the connection between the
eccentric and the carriage is kept at all times closely set up and free from lost
motion, and that any lost motion that occurs from wear may be taken up by the
nut at any time. Moreover the eccentric has by this construction a connection
with the carriage in both directions, so that said carriage is moved in both direc-
tions by a thrust instead of a pull, the thrust in one direction being against the
knuckle joint B and in the other direction against the shoe B12, the lateral move-
ment or oscillation being accommodated by the knuckle joint at one end and the
curvilinear bearing at the other.
The operation of forming the horse nail blanks into the required shape is per-
formed by passing the severed blank through a series of roller dies, each pair of
dies containing a matrix of the required form, half of the matrix being in one
and half in the other roller of each pair. By this means the blank receives a
series of impressions, and is brought to the required shape gradually. In the
machine illustrated in the drawing I show eight pairs of these dies, and I prefer
that each pair of dies shall contain two matrices; that is to say shall be con-
structed so that at each complete revolution they will operate upon two successive,
nail blanks from the same nail rod, as this arrangement gives plenty of time
while it also gives suitable size and strength to the dies. In this operation of
reducing the severed piece of nail rod to shape it is necessary that the piece of
metal shall be turned a quarter turn after each impression of the dies, in order
that the force of the dies shall be applied to the metal first in one direction and
then in the other, alternately. And as the nail rod comes from the reel with its
flat side parallel to the axis of the reel and is cut by the knives in this position, I
provide means for turning the severed blank a quarter turn on its way from the
knife to the first pair of die rolls, as well as between the successive pairs.
Referring to Figs. 7, 8, 9 and 12, C is a vertical casing perforated at its upper
end with the passage C₁ of a suitable size to receive the nail blank, which passage
has its greatest width in the same plane as the greatest width of the nail rod as
the same is severed by the knife, while at the lower end of this casing is a pas-
sage in which the greatest width lies in a plane at right angles to the passage C¹.
Between these passages C1 and C2 is located the turning device, consisting of the
short section of tube C3 with a passage through it similar to the passage C₁ and C².
Upon this turning device or tube is mounted a small pinion C which is engaged
by a rack connected to the moving knife carriage B2, so that the knife carriage
in each of its to and fro movements causes the tubular turning device (3 to rotate
through a quarter revolution in one direction and return to its former position in
the other direction. The operation is as follows: The severed nail blank falls
down through the passage C and into the turning device, being caught on top of
the passage C, the turning device being now in the position opposite to the one
shown in Fig. 8. When the knife carriage advances again to sever the next blank
the turning device is rotated thereby through the means of the rack and pinion
into such position that it coincides in the direction of the width of this passage
with the passage C below it, and the nail blank having now received a quarter
turn passes through the passage C edgewise to the first pair of die rolls: This
mechanism is duplicated between each succeeding pair of die rolls, with the excep-
tion that instead of the cogged rack C5, which takes its movement from the knife
carriage, a slightly different mechanism is substituted for said rack. This
substituted mechanism will be understood by reference to Figs 15 and 16.
In said figures C is a rock shaft having on it a cogged segment,
and another arm coming in contact with a cam plate C7 attached to one of the die
rolls of the pair immediately below the turning device. The continuous rotation
of the die rolls through the means of this cam plate and segment carrying lever

page_text: and the returning spring C8 produces the intermittent quarter turning to and fro
of the turning device, the cogged segment acting on the pinion of the turning
device in the same manner as the cogged rack above described. It will be noticed
in this connection that the passage ways and the turning devices are duplicated to
accommodate two sets of blanks, and that the second or inside turning device
placed side by side with the first or outside one receive its motion from the latter
by having its pinion engage with the pinion of the latter.
The die rolls are indicated by the letters D D¹, and the matrices by the
letters D2 12 there being two series of two matrices on each roll. (See Fig. 16.)
In order that the die rolls DD' may bear together with the desirable accuracy and
firmness, I mount the boxes of each pair in the manner shown in Fig. 14, in
which D³ is a box yoke, large enough to contain two boxes, one for the journal
of each of the rolls. D4 D5 are two boxes lying side by side in the yoke. The
vertical sides of these boxes are formed into a wedge shape, being larger at the
front than at the back. And between the yoke and the boxes at each side is a
wedge D provided with a screw D7 tapped into the yoke for holding the wedge in.
Through the yoke and through a slot in the wedge D at each side is a draft
screw D8 tapped into the box to clamp and hold it against the wedge.
between the two boxes is a central wedge D to be driven into place by blows.
Now, in adjusting the boxes they may be driven together by the wedges D6, which
are to be held in position by the screw 17, and driven apart by the center
wedge D, and held firmly against the wedges I by means of the draft screws DB,
so that all slack or shake of the bearings is prevented..
And
In order to clean out the passages from time to time, as well as to prevent any
bad effect from accidental clogging of the same which may take place while the
machine is in operation, these guide ways or passages are made in two parts
throughout their length, and the turning device in each and its pinion is also split
lengthwise, the whole being held together by means presently to be described,
and in such manner that the front part may be removed readily to expose the
passage. And the same split arrangement of casing and turning device is dupli-
cated for the inner or fellow passage and its turning device, as will be seen at
Fig. 16. These parts are held together when in position by a lever E, jointed to
the outer part of the casing at E, and fulcrumed in a latch device 2 secured to
the frame of the machine. The outer end of the lever is connected to a rod ³,
which in turn is pivoted to a lever E, and this latter lever to a rod E³, and this
rod E is in turn connected to the driving clutch mechanism of the machine in
such manner that when clogging takes place in any of the passages in such way
as to force out or force apart the casing of the passages the rod E will be moved
thereby and a spring latch released which will throw the clutch out and stop the
machine. E is the power wheel of the machine, and E7 a yoke that moves the
clutch connected to the end of the lever Es, to which lever is attached a spring E⁹
the pull of which tends to throw the clutch out of engagement, if said pull is per-
mitted. The lever E8 is connected to a rock shaft E10, which rock shaft by means
of a lever E and connecting rod E2 is connected to the starting lever E. A
latch E engages the lever E and holds the clutch in position against the
spring E. The said clutch E is itself held down against the upward pull of
the spring E5 by means of a wedge enlargement E16 carried on the end of the
rod E5. When the rod E5 is pulled by the opening of the casing, as above
described, the latch E is released from the lever E" and the spring E is then free
to throw open the clutch E7 and stop the machine by releasing the power wheel
from its shaft. To start the machine again it is only necessary to swing the
lever E3, which being connected with the lever E", the rock shaft and the lever E8
forces the clutch into engagement against the power of the spring E³. And if
the latch E14 is set properly the machine will then continue to run. The latch E³
in which the lever E is fulcrumed, is so constructed that it may be opened and
the lever E entirely removed, in order to permit the casing cover attached thereto
to be entirely taken off when required.

page_text: The devices above described for unshipping the clutch will operate when any one
of the several sections of the guide casing is forced open by clogging, and without
interfering with the other sections or portions, because the connection between the
lever E and the lever E3 is a loose one by a slot and pivot, as will be understood by
reference to Fig. 17. This looseness of connection permits the swinging of the
shaft on which the levers E' are mounted through a certain arc, which is sufficient
for all purposes, without causing any of the levers E to be effected.
After the nail blank has been acted upon by all of the die rolls it is discharged
into the last section of the guide way or passage, which in the machine shown in
the drawing is not provided with any turning device, as a further turning of
the nail blank is unnecessary. The next operation required to completely form the
blank is to compress the nail head between the dies with a compression in the
direction of the length of the nail in dies which are made solid to avoid the forma-
tion of a fin on the nail head, and to give the desirable smooth contour to said
nail head. As the die which to hold the nail is a solid one, and as the nail
is delivered from the roller dies head first and with the head downward, it is
necessary to provide some means for receiving the blank head first and turning it
so that it may be delivered to the heading dies point first and be passed into the
solid heading die. For this purpose of receiving the nail blank head first and
delivering it point first I provide the turn plate F, located immediately below the
last section of the guide way above described. The turn plate or rotating receiver,
speaking generally, consists of a circular plate provided with a number of radial
slots and moving with an intermittent rotary motion so that each one of the radial
slots will be brought in succession and in proper timing beneath the last section
of the guide way, so that each of said radial slots will receive a nail blank which
will fall into it from the guide way head first, and be carried around to a horizontal
position, where a reciprocating pusher operates to push the nail blank out of the
radial slot point first into one of a series of die blocks, said die blocks being
mounted on a moving chain moving with the same intermittent motion as the turn
table. The chain of die blocks containing the blanks is carried under a recipro-
cating die press where one or more dies are brought down upon the heads in suc-
cession, after which, and when the blanks have been carried around to the inverted
position they are pushed out of the dies and thus discharged from the machine.
Referring to Figures 20, 21, 22, 23, 24, 25, 26, 27, 28 and 29, the details of the
construction of the turn plate F will be seen. The plate, as a whole, is mounted on
the end of one of the gear shafts of the machine, and said plate is cut with a series
of radial slots F¹. (In the machine illustrated to accommodate the duplication
of the feed passages and matrices on the die rolls there are actually two series of
these passages in the turn plate.) F2 is a hub or cap intended to hold in place in
the radial slots a series of slides F3 one of which is shown detached at Figure 28,
and also to guide a reciprocating push rod F. This hub or collar F engages the
slides F in the cavity F5 and prevents said slides frem coming out of the radial
slots and holds the same in toward the centre of the plate. A cavity in the collar
marked permits the insertion or assembling of the slides and collar in place and
permits the slides to be pushed out into the slot to discharge the nails when any
given slide is in proper position to coincide with said cavity. And the end of the
push rod F is bent and conformed at F7 to fit the cavity F³, and correspond in
outline to the shape of the collar in cross section, so that said push rod F* may
engage in turn each of the slides F3 as they are brought successively around by
the intermittent rotation of the turn plate. The intermittent motion is given to
the push rod F by means of a cam F8 and connecting lever, (see Figs. 5 and 6)
which cam is mounted on one of the shafts of the machine and rotates continu-
ously. F, (see Figs. 20 and 25) are springs mounted in the turn plate in such
imanner as to give a slight friction on the nail blank while the same is in the
radial slot, to obviate any tendency of a quick motion to throw the blank out of
the slot centrifugally.
Gare the solid heading dies, (See Figs. 5, 30, 31, 32, 38 and 39.) These dies

page_text: are duplicated to simultaneously accommodate the two sets of nail blanks, and are
mounted in series in a chain G¹ passing over the carrying wheels G³, G³, between
which wheels is located an anvil block or solid table G along the upper surface of
which the chain of dies is carried, said table being itself slotted with slots G³ to
accommodate the depending shanks of the nails in the passage of the dies across it.
It will be noticed that the carrying wheels G2 G3 are also each similarly slotted to
accommodate the shanks of the depending nail blanks. Go is a die head mounted
in slides and reciprocating up and down by a pitman G7 operated by an eccen-
tric GB similar in construction to the eccentric operating the cutting dies, and above.
described. This die head carries the dies GG0. The object of having two dies
in the die head is simply in order that the swedging operation on the head may be
more gradual, i.e. so that each nail head will be twice operated upon, each opera-
tion being by a die of slightly different conformation, on the principle of gradual
shaping. And in cases where peculiar conformation is desired to be given to the
head an additional die or dies may be mounted in the die head G6, such dies being
properly spaced to correspond with the countering dies in the chain below.
Attached to the die head Go by means of the rod G" is a discharge plate or
pusher G, which pusher having the same reciprocating motion as the die head G6
comes down upon the ends of the projecting shanks of the nail blanks when they
have been carried around by the movement of the chain and drives the blanks
out of the heading dies thus discharging them from the machine.
The means employed for imparting to the turn plate and to the chain of heading
dies the requisite coincident intermittent movement is as follows: Fixed to the
turn plate is a gear H, and fixed to the chain carrying wheel G2 is a corresponding
gear H, between the two gears H and H' is an intermediate idler gear H², the
arrangement being such that any movement given to the wheel G2 is imparted by
the gears H1, H2 and H to the turn plate. On the shaft H³ on which the chain
carrying wheel G2 is fixed is a loose gear wheel H4, which meshes with the con-
tinuously running gearing of the machine. And carried on this gear wheel H*
is a spring pawl H³ pressed inward toward the shaft by a spring H
(See Figs. 35 and 37.) Connected to the chain carrying wheel G2
by means of a sleeve H7 which extends from the gear H¹ is a ratchet H8.
And con-
nected to the frame work of the machine adjacent to the ratchet and pawl and
surrounding the sleeve H, is a stationary can plate H secured to the frame work
by a bolt through the adjusting slot H. On the periphery of this cam the
pawl H rides and is held out of contact with the ratchet teeth at all points except
at the depression H". So that at each revolution of the gear wheel H₁ the paw! H5
will descend in the depression and engage a tooth of the ratchet and carry the
ratchet forward one tooth only, riding out of the depression and onto the circular
periphery of the cam when this has been accomplished. By this means each revo-
lution of the gear wheel H imparts to the chain carrying wheel, and to the turn
plate a stated portion of a revolution. To prevent wear and shock the casing
which carries the pawl H is cushioned at each side by a piece of rubber H. To
ensure that the stated part revolutions shall be accurate, and the chain carrying
wheel held positively at each stop, I key to the shaft H³ an index wheel H. And
above it secured to the frame of the machine is a spring depressed pawl or locking
latch H. Attached to the gear wheel H is a cam H15, which at each revolution
of said gear wheel H under-rides the pawl H and lifts it out of the notch in the
index wheel, permitting the index wheel to move with the shaft which is now
being moved by means of the ratchet and pawl previously described. When the
cam H has passed, the latch H springs again into contact with the index wheel
and rides on said wheel during the further movement of the latter until a notch
is reached, and entering said notch stops the shaft. To overcome the shock of
stopping I insert betweeen the casing which carries the latch H and the frame
work of the machine a rubber cushion H. It will be understood that the number
of notches in the index corresponds to the radial openings in the turn table. And
it will be seen from the drawing at Figure 34 that between the notches on the

page_text: index wheel the periphery of said wheel is inclined slightly ratchet fashion from
notch to notch to insure the pawl engaging the notches with certainty.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1st. In a horse nail machine of the roller die type, and having a series of over-
hung roller dies, the combination with said roller dies constructed with a multiple
series of matrices, of means for feeding into the machine several strips of nail rod,
multiple nail blank passages extending to and connecting the successive pairs of
rolls, and multiple sets of turning devices for giving the blank a quarter turn on
its way to the dies, one set for each passage, one set of turning devices operating
the other, a turn plate having two sets of radial passages and a pushing device
for operating in both sets simultaneously for turning and delivering the nails,
substantially as specified.
2nd. In a horse nail machine of the roller die type, and having a series of over-
hung roller dies, the combination with said roller dies constructed with a multiple
series of matrices, of means for feeding into the machine several strips of nail rod,
multiple nail blank passages extending to and connecting the successive pairs of
rolls, and multiple sets of turning devices for giving the blank a quarter turn on
its way to the dies, one set for each passage, one set of turning devices operating
the other, a turn plate having two sets of radial passages and a pushing device for
operating both sets simultaneously for turning and delivering the nails to a dupli-
cate heading die mechanism, and said duplicate heading die mechanism, sub-
stantially as specified.
3rd. In a horse nail machine of the roller die type, the combination with the
series of die rolls, of a turn plate and pushing device for receiving the nails head
first and delivering them shank first to a heading die mechanism, said heading die.
mechanism consisting of a series of solid dies mounted in a chain and passing over
wheels, slotted to accommodate the depending shanks of the nails, a slotted anvil
between the chain wheels and a countering die or dies above the anvil, sub-
stantially as specified.
a
4th. In a horse nail machine of the roller die type, the combination with the
series of die rolls, of a turn plate and pushing device for receiving the nails head
first and delivering them shank first to a heading die mechanism, said heading die
mechanism consisting of series of
mounted
solid dies
in a chain
and passing over wheels, slotted to accommodate the depending shanks
of the nails, a slotted anvil between the chain wheels and a countering die
or dies above the anvil, said countering die having a reciprocating motion and
mounted in a head to which is connected a nail discharging pusher placed between
the chain carrying wheels and operating to push the nails in the chain out of
the same to discharge them from the machine, substantially as specified.
5th. The mechanism for conveying a nail blank to forming dies and giving said
blank a quarter turn on its way, consisting of a tubular guide way a portion of
which is mounted to revolve, and means for giving said portion a part revolution,
said means consisting of a pinion mounted on said revolvable portion, and a cogged
segment actuated by a cam mounted on one of the roller die shafts, substantially
as specified.
6th. The mechanism for feeding several nail blanks to roller dies having dupli-
cated matrices, consisting of duplicated guide ways, each containing a revolvable
portion, and each guide way being formed in two separable parts including said
revolvable portion, and means for holding said guide ways together when in opera-
tion, whereby facility for opening, cleaning and removing clogged nail blanks is
afforded, substantially as specified.
7th. The mechanism for feeding several nail blanks to roller dies having dupli-
cated matrices, consisting of duplicated guide ways, each containing a revolvable
portion, and each guide way being formed in two separable parts including said

page_text: revolvable portion, and means for holding said guide ways together when in opera-
tion, whereby facility for opening, cleaning and removing clogged nail blanks is
afforded, said means for holding all of said portions together being connected by
intermediate parts with a latch or device for operating a clutch to stop the
machine, substantially as specified.
8th. In a horse nail machine, the device for straightening the nail rods, con-
sisting of three idle rolls, the middle one of which is mounted upon one arm of
a bell crank lever the other arm of which is provided with a sliding adjustable
weight, substantially as specified.
9th. The adjustable bearing boxes for the roller die shafts, consisting of two boxes
having wedge shaped sides, in combination with adjustable wedges, a yoke surround-
ing the whole, and draw bolts for clamping the boxes to the yokes, substantially
as specified.
10th. The means for operating the knife carriage and keeping the same free from
lost motion by wear, consisting of an eccentric, a pitman therefor made adjustable
as to length and pivoted to said carriage, a shoe on the carriage made in the form
of an are struck from the center of the pitman pivot, and a bearing on the eccentric
strap setting against said shoe, substantially as specified.
11th. The means for severing blanks.from the nail rod and delivering the
severed blanks to a feed passage, consisting of a stationary cutter with a stop at
suitable distance beneath it, a movable knife mounted on a carriage which recipro-
cates to and fro, and a yielding blank holder mounted on said carriage to come in
contact with the blank while the same is being severed, holding said blank and
pushing it over the feed passage while the movable cutter retreats and then releas-
ing said blank to drop into the guide way, substantially as specified.
12th. The means for severing blanks from the nail rod and delivering the severed
blanks to a feed passage, consisting of a stationary cutter with a stop at suitable
distance beneath it, a movable knife mounted on a carriage which reciprocates
to and fro, and a yielding blank holder mounted on said carriage to come in con-
tact with the blank while the same is being severed, holding said blank and push-
ing it over the feed passage while the movable cutter retreats and then releasing
said blank to drop into the guide way, said yielding blank holder being slotted
or forked at the end to surround the severed blank, substantially as specified.
18th. The mechanism for receiving the blanks from the roller dies head first and
delivering the same shank first to the heading dies, consisting of a turn plate pro-
vided with radial slots, each of which has at its inner end a slide held in position
in the turn plate, in combination with a push rod operated intermittently in time
with the intermittent rotation of the turn plate to push said slides toward the peri-
phery of the turn plate successively, substantially as specified.
14th. The mechanism for receiving the blanks from the roller dies head first and
delivering the same shank first to the heading dies, consisting of a turn plate pro-
vided with radial slots, each of which has at its inner end a slide held in position
in the turn plate, in combination with a push rod operated intermittently in time
with the intermittent rotation of the turn plate to push said slides toward the peri-
phery of the turn plate successively, the means for holding the slides in place con-
sisting of a collar engaging cavities in said slides, perforated to permit the passage
of the push rod and slides, substantially as specified.
15th. The turn plate F provided with two series of radial slots, and a single
series of slides operating in both series of slots, said slides being held by a single
collar perforated to permit their passage, and a push rod, all in combination, sub-
stantially as specified, whereby means is afforded for receiving simultaneously two
nail blanks head first, and delivering the same shank first to heading dies, sub-
stantially as set forth.
16th. The device for receiving nail blanks head first and delivering the same
shank first, consisting of the combination of an intermittently rotating plate pro-
vided with radial slots, a slide in each of said slots, a collar engaging each of the
slides and being slotted at one point for the passage of a single slide at a time, and

page_text: a reciprocating pusher timed to move with the plate and engaging the slides suc-
cessively to push the same out and return the same toward the center of the plate,
substantially as specified.
17th. The combination with two carrying wheels, an endless chain of dies, an
anvil between the wheels and in contact with the chain of dies and a reciprocating
die opposing the anvil, substantially as specified.
18th. The combination with the endless chain of dies, of means for moving the
same intermittently, an anvil in contact with the chain and countering die oppos-
ing the anvil substantially as specified.
19th. The combination of the endless chain of dies, each consisting of a solid
block with a hole through it adapted to receive a nail blank, the carrying wheels
moving with a step by step rotation and slotted to accommodate the nail shanks,
an anvil in contact with the chain between the wheels, said anvil being also slotted
to accommodate the nail shanks, and an opposing reciprocating die, substantially
as specified.
20th. The endless chain of perforated dies, in combination with the anvil, the
carrying wheels, the reciprocating die operating upon one ply of the chain, and
the push out rod connected to the head of said reciprocating die and operating upon
the other ply of said chain, substantially as specified.
21st. The combination with the roller dies and mechanism for forming the nail
blanks, of the turn plate for receiving said blanks head first and delivering them
shank first to the heading dies, the endless chain of heading dies, the anvil and the
reciprocating heading die, substantially as specified.
22nd. The combination with the endless chain of heading dies, the anvil and
two or more reciprocating heading dies one following the other in its action upon
the dies of the chain or their contents, substantially as specified.
23rd. In combination with the roller die mechanism constructed to operate
simultaneously upon one, two or more nail blanks, the turn plate constructed to
receive and deliver simultaneously two or more nail blanks, and the endless chain
of dies, said chain consisting of two or more series of dies placed side by side, the
chain carrying the wheels, the anvil and the reciprocating die head opposing said
anvil and carrying two or more die heads side by side, substantially as specified.
24th. The mechanism for imparting a step by step rotary motion to the chain
carrying wheels, and the turn plate F geared thereto, which consists of a loose gear
wheel carried on a shaft and bearing a spring pawl, a ratchet connected to the
wheel to be actuated, a stationary cam on which the pawl rides and containing a
depression which permits the pawl to engage one tooth at each revolution, a
notched index plate locked to said shaft, a stationary spring latch for engaging
said notches, and a cam on the gear wheel for engaging and lifting said latch,
substantially as specified.
25th. The mechanism for imparting a step by step rotary motion to the chain
carrying wheels, and the turn plate F geared thereto, which consists of a loose gear
wheel carried on a shaft and bearing a spring pawl, a ratchet connected to the
wheel to be actuated, a stationary cam on which the pawl rides and containing a
depression which permits the pawl to engage one tooth at each revolution, a
notched index plate locked to said shaft, a stationary spring latch for engaging
said notches, a cam on the gear wheel for engaging and lifting said latch, the
housings for said pawl and said latch being cushioned with an elastic cushion,
substantially as specified.
100M
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.