Improvements in Nailing Machines, chiefly designed for use in the Manufacture of Boots and Shoes.
Year: 1890

page_text: Date of Application, 27th Nov., 1890
Complete Specification Left, 27th Aug.. 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Nailing Machines, chiefly designed for use in the
Manufacture of Boots and Shoes.
I, WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
in the County of Stafford, Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention relates to nailing machines, chiefly designed for use in the
manufacture of boots and shoes, and consists in improvements upon the machine
described in the Specification of former Letters Patent granted to Charles
Frederic Gardner, and dated February 25th 1885 No. 2591.
In my invention I dispense with the "awl" and drive the nails without first
piercing holes to receive them and, instead of feeding the work by the horizontal
motion of the "awl," I provide a four motion feeding foot, which acts upon the
surface of the work, and I operate the same from a cam upon a shaft of the machine,
through suitable connections which give at the proper times the up and down
movement to the feeding foot. For the to and fro motion I either employ the
movement of the "movable or oscillating head," described in the Letters Patent
already referred to, or I introduce another cam with connections arranged to give
to and fro movement to the feeding foot in the direction desired and at the proper
times.
In the operation of "slugging" or sprigging heels I cause the horizontal
movement of the feeding foot to operate at right angles to the direction of the
"chute" down which the "slugs" or sprigs are fed.
I also occasionally employ a post, in place of the "horn" as described in the
aforesaid Letters Patent, to support the boot and I give to the upper end of the
horn or post a horizontal movement exactly conformable to that of the feeding foot,
while still retaining the up and down movement of the "horn"
j the object being
that the work being gripped between the support and the foot is securely held and
fed forward. The amount of movement given to the feed is capable of being
adjusted so as to drive the nails, "slugs," or sprigs closer or further apart as
desired.
It is necessary that the machine be capable of being stopped promptly in a
particular position and to accomplish this I alter the construction and arrangement of
the "brake band ".
'-see former Letters Patent No. 2591 A.D. 1885 already referred
to-and I connect it to the starting "treadle" in such a manner that the brake is
completely out of action while the operator depresses the "treadle" and maintains
the machine in motion and is brought powerfully into action as soon as the operator
raises his foot from the "treadle" to stop the machine.
It is sometimes desired to rivet or nail the boot while it is still upon the last,
which must be of iron, or if of wood at least plated with iron, so that the nails may
clinch. In such a case I may use the "jack' as described in the Specification
accompanying application for Letters Patent dated June 3rd 1890 No. 8550.
Dated this 26th day of November 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in Nailing Machines, chiefly designed for use in the
Manufacture of Boots and Shoes.
I WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
in the County of Stafford, 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 nailing machines chiefly designed for use in the
manufacture of boots and shoes and consists in improvements upon the machine
described in the Specification of former Letters Patent granted to Charles
Frederic Gardner, and dated February 25th 1885 No. 2591.
In my invention I dispense with the "awl" and drive the nails without first
piercing holes to receive them and instead of feeding the work by the horizontal
motion of the "awl" I provide a "four motion" feeding foot which acts upon the
surface of the work and I operate the same from a cam upon a shaft of the machine
through suitable connections which give at the proper times the up and down
movement to the feeding foot. For the to and fro motion I either employ the
movement of the "movable or oscillating head" described in the Letters Patent
already referred to or I introduce another cam with connections arranged to give to
and fro movement to the feeding foot in the direction desired and at the proper
times.
"
In the operation of ".
"slugging' or sprigging heels I cause the horizontal
movement of the feeding foot to operate at right angles to the direction of the
"chute" down which the "slugs" or sprigs are fed.
"
I also occasionally employ a post, in place of the "horn as described in the
aforesaid Letters Patent, to support the boot and I give to the upper end of the
horn or post a horizontal movement exactly conformable to that of the feeding foot
while still retaining the up and down movement of the "horn" the object being
that the work being gripped between the support and the foot is securely held and
fed forward. The amount of movement given to the feed is capable of being
adjusted so as to drive the nails, slugs, or sprigs closer or further apart as
desired.
It is sometimes desired to rivet or nail the boot while it is still upon the last
which must be of iron or if of wood at least plated with iron so that the nails may
clinch. In such a case I may use the "jack" as described in the Specification of
former Letters Patent granted to me and dated June 3rd 1890 No. 8550.
It is necessary that the machine be capable of being stopped promptly in a
particular position and to accomplish this I alter the construction and arrangement
of the "brake-band," see former Letters Patent No. 2591 A.D. 1885 already
referred to, and I connect it to the starting "treadle" in such a manner that the
brake is completely out of action while the operator depresses the "treadle" and
maintains the machine in motion and is brought powerfully into action as soon as
the operator raises his foot from the "treadle" to stop the machine.
In the accompanying drawings,
Fig. 1. is a front elevation of the machine shewing my improvements.
Fig. 2. is a side elevation of the same.
Fig. 3. is a view of the horn.
Fig. 4. is a front view of part of the machine head shewing the adjustable feed.
Fig. 5. is a side view of the same.
Fig. 6. is a front view of part of the head shewing the feeding foot.
Fig. 7. is a side view of the same.
Fig. 8. is a back view shewing the brake.
Fig. 9. is a side view of the same.

page_text: Figs. 10. & 11. are back and side views respectively of the pawl raising handle.
The same letters indicate the same parts.
The pillar "a" of the machine is supported upon the base "a" and carries the
head frame "a" To these the various other parts of the machine are attached.
The driving pulley "," is mounted upon the driving shaft "61" and when
desired is made to engage by means of friction cones with the balance wheel """
secured upon the end of the driving shaft "b¹."
The starting wedge "" is carried upon a vertical rod "e" and is operated by a
treadle carried upon a pivot "3" in the base "a." Depressing the
treadle ""raises the rod "e" and starting wedge "c" which presses the friction
cones of the pulley "" and balance wheel "2" into gear so as to drive the
machine and when the foot is raised from the treadle "2" the wedge "c" falls so
as to allow a spring (not shewn), which is placed between the pulley "6" and the
balance wheel, to force the friction cones out of gear and permit the machine
to stop.
,
ઃ
The brake band "c" embraces the balance wheel "*" to which it is held by
spring pressure.
It is carried on a stud "c" from the head frame "a" and acts to increase the
resistance of the machine to movement.
tr
The swinging head "d" is pivotted upon the head frame "a2" so as to be capable
of oscillation.
The head "d" carries the driver bar "" which is arranged to slide up and
down therein being pressed upon from above by the spring "2" and having a
projection acted upon by a crank or lifting-piece (not shewn) attached to and
actuated by the driving shaft "." The revolution of the driving shaft "1" thus
alternately lifts and releases the driver bar "d" which when released is driven
The lower end of
forcibly down by the spring "d2" in a well known manner.
the driver bar "d" carries the driver "d3" which strikes upon and drives in the
nails.
The nails are deposited in the box "e" which is revolved by the machine and
feeds the nails down the chute "e" at the lower end of which they are automatically
supplied one at a time to the driver "d³."
*
The gear wheels "d" "d" connect the driving shaft "1" with a second
shaft "d" from which the swinging head "d" derives its motion in a manner
hereinafter explained. Carried upon the same pivot "c" as the treadle "c2" is
a double ended lever "f" the forward end of which carries the work supporting
post "" and the backward end being connected with the machine by the
rod ""The rod "f1" is fitted to slide at its upper end in a slide way "f"
on the machine pillar "a" and is furnished with ratchet teeth "3" Upon the
driving shaft "1" is a cam "f4" which by means of a bell crank "f" and a
rod "moves a sliding frame "f7" up and down. The sliding frame "f"" is
carried in the same slideway "f2" as the rod "f1" and carries upon it a
pawl "" which takes into the teeth "f" The revolution of the cam "f"
causes the sliding frame "f" and pawl "f8" to rise and lift upon the ratchet
teeth ""so as, through the lever "f," to depress the work supporting post "k"
at the time when the feed is taking place and when the feeding movement is
finished the cam "f" causes the frame "f" and pawl "f8" to descend again.
In descending the pawl "8" takes upon a cam piece "fa" which lifts it.clear of
the ratchet teeth. "3" so as to free the rod "f"
66
66
Thus far the description of the machine agrees with that of nailing machines as
hitherto constructed such as the one described in the Specification of C. F. Gardner
dated 25th February 1885, No. 2591, and which has been already referred to.
In my improved machine I discard the awl and drive the nails without first
piercing holes for them. I feed the work as the nailing progresses in the following
manner. I provide a four motion feeding foot "g," Figs. 6 and 7, the roughened
under side "9" of which acts upon the surface of the work. It is fitted to slide

page_text: 66
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up and down in the nose piece "92" which is modified to receive it and the nose
piece "92
is attached in the ordinary manner to the lower end of the swinging
head "d." The up and down movement of the feeding foot necessary to alternately
hold and release the work I derive as follows. Upon the shaft "" previously
referred to I mount a cam *
3" of such a shape as will give at the proper times
the desired movements to the feeding foot "
The cam 46
93" acts upon a
lever which is mounted upon a shaft "95" carried in a bearing "g" upon
the swinging head "d." The front end of the shaft ""carries a second lever "
the end of which engages with the upper end "98" of the feeding foot
and the revolution of the cam "g³" moves the foot "g" up and down. The
swinging movement of the head "d" gives the to and fro movement necessary to
feed forward the work and in order that the amount of this movement may be
capable of variation it is obtained in the following manner.
7"
66 "
g
Upon the shaft "d" and immediately in front of the cam "3" I mount an
eccentric "," see Figs. 4 and 5, having a connecting rod "1" jointed on a
pin "2" to the lower end of a curved slotted link "3" which is suspended from
a pin "4" carried in a bracket "/" upon the head frame "a"."
Near the
lower end of the swinging head "d" is a pin ""upon which is pivotted a con-
necting rod "" having a pin "8" on which is a die "." The die "" is
fitted in the slot "10" of the link "3" and can be moved up and down therein
by means of the handle "1" formed on the end of the connecting rod "." The
link "3" is furnished with notches "12" in one edge in which a catch "13"
engages. The catch "13" slides in a hole in the handle """ and is pressed
forward into the notches "12" by a spring "h" The revolution of the
eccentric "h" gives a swinging movement to the link "h" which is less at the
upper end "15" of the slot 10 near the point of suspension "*" than at
the lower end "1" of the slot, accordingly therefore as the die "" is raised or
lowered in the slot "10" so will the movement of the swinging head "d" and of
the feeding foot "g" be less or greater. Pegs "17" which may be shifted about
in holes "18" in the link "3" act as convenient adjustable stops to the up and
down movement of the handle """
"
39
*
"
a
,,
In the operation of slugging or sprigging heels I cause the horizontal movement
of the feeding foot "g" to take place in a direction at right angles to the
chute "e" down which the slugs or sprigs are fed. I mount the feeding
foot" on the front end of a bar ";" (see Figs. 1 and 2) and connect the rear
end of the bar "i" to the upright arm "" of a three armed lever "2" which
is pivotted upon a pin "3" carried in a bracket ""on the pillar of the
machine. The rear horizontal arm ";" of the three armed lever "2" is con-
nected by a ball ended rod "" to the horizontal arm "7" of a bell crank "8"
mounted on a pivot carried in the head frame "a2" of the machine. The other
arm "" of the bell crank "8" is operated by a cam "10" mounted on the
driving shaft "61" thus revolution of the cam 10" gives horizontal movement
to the bar "" and feeding foot "g" in a direction at right angles to the
chute "e" The up and down movement of the feeding foot "g" is derived
from a cam "j" situated as before on the shaft "." This cam "j" operates a
lever "" which is pivotted to a bracket on the head frame "a" on a pin "."
The free end of the lever "" has a cup "3" in which is fitted the upper ball of
a ball ended rod "4" The lower ball is fitted in another cup "" in the bar "¿"
and the lever "" is kept up to the cam by a spring "j"
<<
*
t
It is sometimes more convenient to employ a post "k" in place of the ordinary
horn "as in the operation of sprigging or slugging heels and for convenience
of changing from one to the other I construct them with sockets "3" which
can be interchanged upon the supporting post "k." To ensure correct feeding of
the work I give to this supporting post "k" a movement such as will make the
upper end or tip "," of the post "" or horn "2" as the case may be, con-
form exactly to the movement of the feeding foot """ as follows. The supporting

page_text: post "" is carried on the front end of the lever "f" as before stated and passes
up through the pillar "a" of the machine. It is fitted at the part "" to slide
backwards and forwards in a box arranged upon the pillar "a" and to give
it motion the following arrangement is made use of.
r
66 "7
To the forward arm "/" of the three armed lever "2" before referred to is
jointed a rod "" the lower end of which is again jointed to the horizontal arm
of a bell crank lever "" which is carried on a pivot "13" on the pillar cl.
The other arm "14" of the bell crank "2" is connected by a link "1" to the
supporting post "k." It has been already explained that the cam "10" operates
the three armed lever "2" and as the supporting post "" is connected to the
same three armed lever "2" the same cam 10 serves to operate it. The
upper end of the rod "" can be adjusted by means of the slot "i" nearer to or
further from the pivot of the bell crank "" and thus the feeding movement of
the feeding foot "g" and of the post "" or horn "2" are simultaneously
adjusted.
"
<
The weights m are placed upon the rear end of the lever "f" and serve
to bear up the work against the feeding foot "g" or "g" and oppose the down-
ward blows of the nail driver "³."
:
"
The ordinary up and down movement of the horn is retained being produced by
the cam "4" bell crank "f" and rod "f" acting on the sliding frame "7"
to raise and lower the pawl """ which is arranged to work in the teeth "3" of
the rod "" as already described and in order that the rising and falling move-
ment may be easily either thrown in or out of action I provide a cam lever "n
(Figs. 10 and 11) pivotted on the frame "7" which may be moved into one
position so as to hold the pawl "f" altogether out of contact with the teeth "3"
or into another position so as to allow the pawl "f8" to act upon the teeth "3"
The cam" of the lever acts on a piece "nformed upon or attached to the
pawl "f8"
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To ensure the prompt stopping of the machine when the operator removes his
foot from the starting treadle "" I provide an arrangement which connects the
rod "e" to the brake band "e" so that as the wedge "e" and rod "1"
descend and allow the driving clutch to come out of gear the brake band "c"
is drawn down so as to grip & stop the balance wheel "6" and when the wedge "e"
and rod "e" are moved up by the operator pressing his foot on the treadle "" to
start the machine the brake band "c" is lifted clear of the balance wheel "2" and
the machine runs freely. The stud "o" (Figs. 8 and 9) is secured upon the rod "c"
and acts upon the bell crank "o" which is pivotted to the head frame on the
stud ""the other arm "02" of the bell crank is attached to one end of the brake
band and the other end of the brake band "c" is secured to the stud "co."
The machine revolves in the direction shewn by the arrow so that its own
revolution tends to strain the brake band tight.
*
"
If desired to rivet or nail the boot while upon the last I use the "jack as
described in the Specification of former Letters Patent granted to me and dated
June 3rd 1890 No. 8550 carrying the "jack" by means of its "socket"
support "" in the same manner as are carried the post "" and horn "k"
upon the
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 !
claim is:
1. In a machine for nailing boots or shoes, the arrangement for feeding the work
forward by means of a "foot" which has a step by step motion substantially as
described.
2. In a machine for nailing boots or shoes, the arrangement by which the work
is fed forward at right angles to the chute down which the nails travel substantially
as described.
3. In a machine for nailing boots or shoes giving to the horn or work support a
to and fro movement corresponding with the feed movement.

page_text: 4. In a machine for nailing boots or shoes the arrangement by which the horn
or work support is moved to and fro in correspondence with the feed movement
substantially as described.
5. In a machine for nailing boots or shoes, the arrangement by which the brake
is moved from the balance wheel when the starting treadle is depressed and
is made to embrace the balance wheel when the treadle is relieved substantially
as described.