Improvements in Machines for Making and Driving Nails in the Manufacture of Boots and Shoes.
Year: 1888

page_text: [Communicated from abroad by ORRIL REUBEN CHAPLIN and MICHAEL JOSEPH
FLYNN, both of Boston, and GEORGE EVERETT PARKER, of Chelsea, both in
Massachusetts, United States of America.]
Improvements in Machines for Making and Driving Nails in the
Manufacture of Boots and Shoes.
.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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:-
This invention relates to that class of nailing machines which cuts the nails from a
wire and drives them into the sole of the boot or shoe, for securing the said sole to
the upper.
The said invention is an improvement upon the invention described in the specifi-
cation of Letters Patent No. 7709 dated June 8th 1886 and it consists in certain
novel features of construction, arrangement and combination of parts which will be
readily understood, by reference to the accompanying drawings in which :-
Figure 1 is a side elevation of the upper portion of a machine illustrating my
invention.
Figure 2 is a side elevation of the lower portion of the machine with a portion of
one of the legs broken away.
Figure 3 is a front elevation of the same portion of the machine as shown in
Figure 1.
Figure 4 is a sectional side elevation of the middle portion of the machine with
the work supporting horn broken away.
Figure 5 is a sectional side elevation of the head of the machine looking at the side
opposite to Figure 1.
Figure 6 is a partial section on line 1, 1, of Figure 4.
Figure 7 is a plan of the cam lever and arın for operating the horn clamping
device.
Figure 8 is a sectional elevation of the clamp operating arın.
Figure 9 is a partial sectional elevation on line 2, 2 of Figure 2.
Figure 10 is a partial vertical section on line 3, 3 on Figure 9.

page_text: Figure 11 is a horizontal section on line 4, 4 on Figure 10.
Figure 12 represents a development of the periphery of the cam for operating the
driver, and the nail cutting and pointing plungers.
Figure 13 is a vertical section through the lower portion of the driver stock, and
showing in elevation the means for adjusting the driver.
Figures 14 and 15 are respectively a side elevation, and an edge view of the ratchet
and pawls for operating the wire feeding pressure rolls.
Figure 16 is an elevation of the wire feeding rolls, the gears connecting them, and
the spring for forcing them together.
Figure 17 is a plan of the die block.
Figure 18 is a plan of the same block with the cutting dies and plunger thereon.
Figure 19 is a vertical section on line 5, 5 on Figure 18.
Figures 20 and 21 are respectively a side elevation and a front end elevation of the
stationary pointing cutter.
Figures 22 and 23 are respectively a plan, and a transverse section of the point
cutting dies and slide, the cutting plane of said section being on line 6, 6 in
Figure 22.
Figures 24 and 25 are respectively a plan, and an elevation of the inner face of
one of the movable point cutting dies.
Figure 26 is a sectional elevation of the anvil.
Figures 27 and 28 are respectively a plan, and a side elevation of the sole edge
gauge and,
Figure 29 is a plan of the work supporting spring secured to the tip of the horn,
drawn to an enlarged scale.
In the drawings A is the base of the machine provided with the legs A¹; A² is the
column, A³ is the frame of the head of the machine, B is the driving shaft, B1 and B2
are the tight and loose pulleys, B³ the hand and fly wheel, C the clutch operating
treadle, D the wire carrying reel or drum, E the driver stock, having set in its lower
end the steel driver a. E and E the toggle links for operating the same.
E³ the
connecting rod, E* the cam operated slide, B the cylinder cam for imparting motion
to the several parts, F the feed shaft, and the wire feeding rolls to which an
intermittent rotary motion is imparted through the medium of the ratchet wheel c,
lever c, stop arm c², pawls c³ and c, rod G levers G¹ and G2 and cam B.
H is the die holding block, H' and H2 the cutting dies, I the cutting plunger, to
which a reciprocating motion is imparted by the cain B acting upon the lever, I', 12
is the nose, and J is the sole edge gauge.
L is the shoe supporting horn mounted upon the upper end of the supporting rod
L' so as to be freely revolvable thereon, said rod being mounted in bearings on the
pivoted bar or frame M, and N is the clamping shoe for holding the horn in its
elevated position when the nail is driven.
Lis the bifurcated collar clamped to the lower end of the rod L' so as to move
vertically with said rod it being guided in its upward movement by the sides of a
slot formed in the lower end of the pivoted bar or frame M, and provided with the
journal or pin d upon which is mounted, by its lower end, the arm N¹ in the upper
end of which is formed the slot e with which the three sided crank-pin e¹ on the shaft
O engages and upon which it acts to vibrate said arm.
The shaft O has a rotary motion imparted thereto from the main shaft B, through
the medium of the worm O', the worin wheel 02, the shaft 03 and the bevel gear
wheels 0 and 0.
The lower end of the horn supporting rod L is connected by the link L³ to the
treadle lever L' by which said horn may be depressed, against the tension of the
spring when the pressure of the clamping shoe N is removed therefrom.
The devices thus far described, except in particulars to be hereinafter referred to,
are constructed, arranged and operated substantially in the same manner as described
in the said prior patent.
I will now proceed to describe the improvements which constitute my present
invention

page_text: In the operation of the machine described in my said prior patent, the metal chips
cut from the sides of the wire, to give form to the nail, were a source of trouble from
the fact that occasionally a chip, instead of falling through the hole in the die block
directly beneath where it was severed from the wire, would be caught by the male
cutting plunger, while making a subsequent forward movement and be carried forward
with the new nail and be driven with the nail into the shoe, and sometimes in such a
way as to disfigure the shoe or injure its appearance.
To obviate this difficulty and render it impossible for the chips to get in front of
the male cutting die f, a short plunger 13 is placed directly in front of the cutting
plunger I in a suitable bearing in the die holder H, a portion of the length of said
short plunger having the same outline in cross section as the male cutting die f, and
said plunger I being connected to the lower end of the lever g having its fulcrum at g¹
and having mounted in a stud set therein an anti-friction roll g² as shown.
The plunger 13 is arranged to be moved outward or towards the front of the
machine by the forward movement of the male cutting dief with the newly cut nail
clamped between said die and plunger and in the opposite direction by the reaction of
the spring g³ when the driver stock has moved upward sufficiently far to remove the
plate from the path of the roll 2 at which time the driver a will have been removed
from the path of the plunger I³, said plate g¹ being secured to and moving up and
down with, the driver stock.
As the driver and male cutting die-plunger were both operated by the same cam
path, in my prior patent before cited, in order to apply my supplementary guard
plunger 13 and make it effective, it became necessary that the driver should be raised
after driving a nail, much quicker than in said prior patent.
To accomplish this without the expense of making an independent cam I form in
the cam B in addition to the original or regular path the switch path ¹ to act upon
the truck b² on the driver operating slide E, to raise the driver suddenly, said truck
being compelled to follow said switch-path by the tension of the spring 63 secured to
the side of the frame A³, in position to be struck at its free end by the rear end of
the slide E, when it is moved to the rear in driving the nail, said spring being
limited in its forward movement by the stop-pin set in the side of the frame A³ as
shown in Figure 1.
In the machine described in the before cited prior patent only one set of cutting
dies were used, but I found it desirable to use an additional set of dies for pointing
the nail prior to the severing of said nail from the wire and slabbing the main body
of the shank of the nail, so that all nails cut shall have the same thickness of point
regardless of their length, and to this end I use the sliding plate 2 carrying the
removable half dies ³ ³ and provided with the transverse groove 14 upon its upper
side, with which the rib or lugi on the short rocker shaft engages as shown in
Figure 5.
The shaft has secured upon one end thereof the arm 2, the movable end of which
is connected by the rod to the lower end of the lever O mounted loosely upon the
fulcrum pin 07, and provided at the upper end with an anti-friction roll to fit into
and be acted upon by the path of the cam B' as shown in Figures 1 and 5.
The two half dies have their inner faces inclined and are provided with notches ³
extending transversely across said inner faces, one side of each of said notches being
cut at right angles to said inner face, to form a cutting corner, said notches forming
when the half dies are placed in position in the plate or frame h² a vertical opening
through which the wire to be cutis fed, the right angled corners of the inclined inner
faces of the half dies constituting together a movable female cutting die for pointing
the end of the wire.
The male die, to cooperate therewith for pointing said wire, consists of the wedge
shaped rib which projects downward from the block 03, and fitting into and filling
transversely the wedge shaped space between the half dies h³, h³ seen in Figure 23,
said block O being secured in a fixed position, and being provided with the vertical
opening through which the wire from which the nails are to be cut is fed, preparatory
to being acted upon by the cutting dies.

page_text: It will be seen that the levers 11 and 0 for operating the male cutting die
plunger I and the pointing die carrying plate h² respectively are both operated by
the path of the cam B, but as said levers are arranged upon opposite sides of said
cam, and as the die fcuts the nail when moving towards the front of the machine,
and the pointing dies perform the work of pointing the end of the wire during the
movement of the plate 2 towards the rear of the machine, and the further fact that
the throw 2 of said cam, which moves the lever I in the proper direction to sever the
nail from the wire and complete the shaping of its shank, commences to act upon
said lever a little in advance of the action of the throw 3 upon the lever 06, it follows
that in the operation of the cutting dies, the die f first completes the shaping of the
sides of a nail and sovers it from the wire by its forward motion, and as soon as said
nail is severed and before it reaches a position beneath the driver the die carrying
plate is moved towards the rear to point the end of the wire preparatory to the
action of the die f thercon for forming another nail at its next forward
movement.
When the plate is again moved towards the front of the machine, by the throw 2
of the can path so as to bring the opening formned by the notches in the half
dies in line with the opening in the block O³, and the die has been moved to the
rear until its front end reaches the rear of said opening, and the guard plunger 1³
has been moved towards the rear until its rear end reaches the front side of said
opening, the chips which were cut from the side of the nail previously severed by the
die fas well as the chips severed from the end of the wire by the pointing dies will
drop through the hole in the die block H, and through the opening in the sole
edge gauge J, from which they may be conveyed to any suitable receptacle by a
tube connected to said gauge but not shown in the drawings.
In the machine described in the before cited prior patent the length of wire to be
fed, and consequently the length of nail to be cut, was controlled by the adjustment
of two scroll stop cams, and the placing of the operator's foot upon a treadle to
determine whether a long nail or a short nail should be cut.
In my present invention I dispense entirely with one of the scroll stop cams, and
use instead thereof a plain stop pin the other scroll stop cam j¹ being used in sub-
stantially the same manner as in the said prior patent.
I also dispense with the treadle for operating the lever G² and connect the lower
end of the rod G³ to the rear end of the lever G³ pivoted to the column A² at j2 and
provided at its front end with the laterally projecting pin, with which the lower end
of the hub of the horn L engages when said horn is depressed, thereby vibrating the
levers G and G2, causing an adjustment of the stop lever e² and a consequent
increased backward movement of the pawl lever cl whereby said pawl lever is struck
by the cam B sooner, resulting in an increased forward movement of the pawls ³
and and a consequent greater movement of the ratchet wheel c, and the feed rolls b
and 6 said increase being in proportion to the amount of the depression of the horn
caused by the varying thickness of the sole.
The rod G³ is made in two parts, connected together by a telescopic joint and pro-
vided with a spring the tension of which tends to keep said rod expanded to its
greatest length, the upper section of said rod having a portion of its length made
rectangular in cross section, and fitted to a bearing in the box k¹ the inner face of said
rectangular portion having secured thereto the steel plate with which the steel cam
surface of the rocker-shaft impinges to clamp said rod and hold it in a fixed
position during the time that the feed is taking place, said clamping device being
operated by the action of the path k³, in the cylinder cam P, firmly secured upon the
shaft mounted in bearings P, P1 and P2, the two former being secured to the
column A² and the latter to the frame A³ upon the crank pin k formed upon one end
of the rocker-shaft all as shown in Figures 1, 2, 4 and 6.
The rear end of the lever G is depressed when the horn rises by the reaction of the
spring pivoted to the side of the column A2 the tension of which may be regulated
by the set screw l acting upon the toe & formed upon the rear end of said spring as
shown in Figure 4.

page_text: The object of making the rod G³ in two parts telescopically connected and provided
with the spring k, is, to enable the operator to depress the horn when the upper section
of said rod is clamped, said spring & being of the necessary stiffness required to keep
said rod expanded during the ordinary variations of rise and fall of the horn caused
by the variations of thickness in the work being operated upon, said spring however
readily yielding when the horn is depressed by the action of the treadle L.
The feed rolls and are compelled to revolve in unison by means of the gear
wheels and as shown in Figure 1.6.
The pawi lever c¹ has mounted therein a short rocker shaft which has formed upon,
or secured to one end thereof, the handle or lever by which it may be oscillated
about its axis, the opposite end of said shaft projecting beyond said lever c¹ beneath
both of the pawls and c which projecting portion is cut away upon one side or
made excentric to its axis, so that, by turning said shaft, both pawls may be dis-
engaged from the ratchet wheel-c when the machine can be run without feeding the
wire and without removing the wire from the machine, which it is often very desirable
to be able to do.
Instead of the pair of toggle links and the rod P', the cam P mounted on the
shaft O for operating the horn clamping bolt and the lever adjusting screw w, stud w¹,
spring, stud 3 and stop nuts of for regulating the pressure of said clamping bolt,
as shown and described in my prior patent before cited, I now use the lever N pivoted
to the column A2 at m, and the cam N³ mounted upon the shaft 03 for vibrating the
same, said lever N2 having connected therewith, so as to be movable thereby about the
same axis of motion, the dog or supplementary lever N provided near its fulcrum
with the semi-circular recess w³, to receive the rounded rear end of the link N° the
front end of which fits a corresponding recess in the rear end of the shoe carrying
clamping bolt No, and having set in its opposite end the adjusting screw N7 provided
with a head m¹ fitted to the socket m² formed in the lever N2 and resting upon the
spring m³ enclosed in said socket, all as shown in Figures 4, 7 and 8.
In the tip of the horn L is set the anvil n having an annular curved recess o in its
upper surface surrounding a central teat or point o¹, which projects above the level of
the outer rim of said anvil as shown in Figure 26, and serves to turn the point of the
nail and clinch the same, and at the same time by entering the under surface of the
material being acted upon, ensures the proper feeding of the material when the horn
is vibrated by the action of the three sided crank pin e¹ upon the slotted arm N¹, and
through it upon the horn carrying bar or frame M.
To the upper portion of the work supporting horn is secured the spring p having
formed in the free end an opening of a diameter sufficient to permit the free passage
through the same of the head of the anvil, the object of which is to press the boot or
shoe upward and hold the sole in contact with the nose I, when the horn is slightly
depressed and moved backward preparatory to feeding the boot or shoo the next step
said spring being shown in Figures 1, 3 and 29.
The bolt L, for clamping the bifurcated collar L2 to the lower end of the rod L'
has formed upon its shank or body a series of pinion teeth which engage with the rack
teeth formed upon the front side of the rod L', so that, by rotating said bolt or
pinion, said collar may be moved up or down on said rod so as to adjust the arm N¹ to
the desired height and then be firmly secured to said rod by tightening the nut q¹ the
construction of said parts being clearly shown in Figures 10 and 11.
In the invention described in my prior patent, hereinbefore cited, two set screws
were used for limiting the amount of lost inotion between the arm N¹ and said set
screws, before the horn carrying pivoted frame or bar was acted upon thereby, to feed
the work being nailed.
In my present invention similar set screws and r¹ are set in the cars and 7 of
the bar M and in addition thereto I mount a small spur gear wheel * upon the screw >1
with which engages a similar gear wheel mounted upon the screw fitted to a
threaded bearing in the stand secured to the rear side of the bar M as shown in
dotted lines in Figure 10.
The screw has secured thereto at one end the milled head by which it may be

page_text: rotated and at its opposite end the stop nut 78 and binder nut and has set
therein near the middle of its length the pin s which serves to limit the movement
of said screw through the stand in one direction by coming in contact with
said stand as shown in Figure 9, said screw being also provided with the binder
nuts by which said screw is secured against accidental displacement when it has
been properly adjusted.
The stop nut serves to limit the movement of the horn carrying pivoted
bar M about its pivot caused by the action of the crank pin e upon the arm N1
and of said arm upon the set screw by coming in contact with the forked
stud R set in the column A2 as shown in Figures 9 and 10.
The screw r¹ is threaded fourteen to the inch and is a right handed screw and the
screw has a left handed thread, sixteen to the inch, so that when said screws are rotated
they will each be advanced or retracted a distance proportionate to their respective
distances from the axis about which the bar M vibrates.
A spring S is secured to the rear side of the bar M, the free end of which
bears against the pin 2 set in the column A2, and tends to move the lower end
of the bar M towards the right of Figure 9, the tension of said spring being
regulated by the set screw as shown in full lines in Figure 9 and in dotted
lines in Figure 10.
The driver stock E has an oblique hole t drilled through it from front to rear,
in which is fitted the cylinder u having its ends oblique to the axis thereof,
and provided with the threaded shank u also oblique to the axis of said cylinder,
by which and the nut said cylinder may be moved obliquely towards the front or
rear of said driver stock E, said cylinder having a notch cut in its under side so as to
form a flat horizontal surface v to rest upon the upper end of the steel wire' like
driver a and serve as an adjustable gauge to aid in setting said driver preparatory to
securing it in the split socket T all as shown in Figure 13.
The nose 12 has inserted therein a hardened steel bushing divided longitudinally
into two equal parts so that in case a nail or chips get jammed therein so that the
driver will not remove them, the nose may be removed, when the bushing may
be backed out and then separated and removed laterally from the obstruction.
f
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign Correspondent, I declare that what I claim is :-
First. In a machine for cutting nails from wire, and driving the same, the com-
bination of a reciprocating driver; a pair of toggle links; a reciprocating slide for
operating said links and provided with a cam stud or truck; a reciprocating nail
cutting die plunger; a lever for moving said cutting die and provided with a cam stud
or truck; a cam provided with a regular path for operating said die operating lever,
and a switchpath or cut off to act upon, and cause the forward movement of, the
toggle operating slide in advance of the throw of the regular path.
Second. In combination with the reciprocating nail cutting male die; the fixed
female cutting dies, and the vertically reciprocating driver; a chip guard plunger con-
structed and arranged to be moved in one direction by the forward movement of said
male cutting dic; a lever fulcrumed at one end and connected at its other end to said
chip guard plunger; a spring for moving said lever and plunger in the opposite direc-
tion; and a stop plate constructed and arranged to prevent said backward movement
until the driver has been moved above said guard plunger.
Third. In combination with the dies for severing the nail from the wire and shaping
the sides thereof, male and female dies constructed arranged and operated to point the
end of the wire from which said nail is severed, preparatory to the cutting of a new
nail therefrom at the next operation of the nail severing dies.
Fourth. In a machine for cutting nails from wire and driving the same, the com-
bination of a pair of dies having provision for forming the head shoulders of a nail and
severing the same from the wire during the forward movement of the male die; a fixed
male die located above said severing and shaping dies; and a female die constructed

page_text: and arranged to co-operate with said fixed male die, during its rearward movement, to
point the end of the wire from which a nail has just been severed, preparatory to the
cutting of a new nail therefrom at the next operation of the nail severing and shaping
dies.
Fifth. The combination of the fixed male pointing die; a female pointing die made
in two parts; a die holder plate carrying said female die; a rocker-shaft provided
with a lip or lug to engage said dio carrying plate; a cam for operating said rocker-
shaft; and a system of levers connecting said cam and rocker-shaft.
Sixth. In a machine for cutting nails from wire, and driving the same, the com-
bination of a pair of dies having provision for forming the head shoulders of a nail and
severing the same nail from the wire; a pair of dies having provision for pointing the
end of the wire from which the nail has been severed; levers constructed and arranged
to impart motion to said dies; and a cam constructed and arranged to operate both
sets of dies.
Seventh. In a machine for cutting nails from a wire, and driving the same, and as
a means for regulating the length of wire to be fed, the combination of a pair of feed
rolls constructed and arranged to gripe the wire to be fed ; a ratchet wheel secured
upon a feed shaft a two armed lever mounted upon and movable about said shaft and
carrying at one end a pawl to engage with said ratchet wheel; an arm provided with
a laterally projecting stop lug and also mounted upon and movable about said shaft ;
a vertically movable bar pivoted to the free end of said stop arın; a spring to move
said bar upward; an adjustable cam stop constructed and arranged to limit and vary
the upward movement of said bar; a two armed lever pivoted to said bar with one end
in contact with the toe of the pawl lever; a cam constructed to act alternately upon
the pawl lever to feed the wire and upon the last mentioned two arm lever to move
said pawl lever backward; a lever connected at one end to said vertically movable bar;
a rod connected by one end to the opposite end of said last mentioned lever; another
two armed lever pivoted at one end to the lower end of said rod; and the work
supporting horn constructed and arranged to act upon the other end of said last
mentioned lever all constructed, arranged and operating as set forth whereby the length
of wires to be fed will be varied by the varying thickness of material which passes
between the tip of the horn and nose of the machine.
Eighth. In combination with the feed wheels, the ratchet and pawls, the levers for
operating the same, the adjustable stop arms, the levers and bar for operating the
same, and the horn constructed and arranged to operate said levers, a vertically
movable rod connecting two of said levers and having a section thereof made
rectangular in cross section and fitted to a guiding bearing; a rocker-shaft having a
cam-surface arranged to impinge upon and gripe said rod; a lever mounted upon said
rocker-shaft, and a cam for imparting to said rocker-shaft an intermittent oscillating
motion substantially as and for the purposes described.
Ninth. In combination with a feed mechanism provided with an adjustable stop arm
to vary the length of wire to be fed, the lever G²; the rod G³ made in two parts
telescopically connected and provided with a spring to expand said rod to its greatest
length; the bearing ; the rocker-shaft k provided with the cam surface k³ the crank
pin, the cam P³, the lever G³; and the horn L all constructed, arranged and adapted
to operate substantially as described.
Tenth. In combination with the vertically movable horn the clamping bolt N'; the
lever N; the cam N³ to act upon and vibrate said lever; the dog or supplementary
lever N provided with the semicircular recess w; the link No connecting said dog and
the bolt N the adjusting screw N and the spring m³ substantially as described.
Eleventh. The anvil n provided with the annular curved recess o and the central
teat or point o projecting above the level of the outer rim of said anvil which teat
serves to feed the shoes beneath the nose of the machine, and when the nail is driven
to clinch it upon the inside of the sole.
Twelfth. In combination with a vertically movable and laterally vibrating work
supporting horn, an anvil set in the tip of said horn and provided with an annular

page_text: curved recess, and a central teat or point projecting above the level of the outer rim
thereof, substantially as described.
Thirteenth. The combination of a work supporting horn, and a spring secured to the
upper side of the tip of said horn with its free end perforated for the passage of the
anvil and adapted to hold the work against the nose of the machine when the horn is
depressed and being moved backward preparatory to feeding the work another
step..
Fourteenth. In combination with the feed roll; the ratchet wheel, pawls and pawl
lever for operating said feed rolls, the rocker shaft having a cutaway or eccentric
portion and the handle 12 all so arranged that the pawls may be raised, and held out of
engagement with the teeth of the ratchet substantially as described.
Fifteenth. The combination of the horn L; the rod L provided with the rack
teeth 23 the bifurcated collar L² provided with the shank or journal d; the combined
clamping bolt and pinion L; the binding nut q'; the slotted arm N¹; and the crank
pin e all constructed, arranged and adapted to operate substantially as and for the
purposes described.
Sixteenth. In combination with the pivoted horn carrying bar M; the horn
supporting rod L'; the collar L²; the arm N'; the shaft O provided with the crank
pin e means having provision for rotating said shaft ; the set screws and r¹ and
the adjusting screw the screws and being differentially threaded; the gear
wheels and the milled head; the stand secured to the bar M. and threaded
to receive the screw; the binding nuts; the stop nut 8; the forked stud R set in
the column A3 all constructed, arranged and adapted to operate substantially as and for
the purposes described.
Seventeenth. The combination of the pivoted bar M; the rod L¹; the collar L
the arm Nthe screws, and 6; the gears 4 and 7; the stand Q; set screws;
the spring S; and the nuts s¹ and all carried by said bar M, and the forked stud R,
the pin both set in the column A³, the shaft O provided with the crank pin e¹; and
means having provision for rotating said shaft O substantially as described.
Eighteenth. In combination with the driver stock and a steel wire like driver, a
bifurcated socket having a conical or tapered outer surface and adapted to be screwed
into the lower end of the driver stock to clamp the driver; and an obliquely movable
wedge having a flat borizontal surface upon its under side to rest upon the upper end
of the driver substantially as described.
Nineteenth. The driver stock E provided with a socket to receive the driver
clamping device, and having an oblique cylindrical hole through the same from front
to rear, in combination with the notched bolt u provided with the threaded shank »¹
oblique to the axis of the cylinder; and the clamping nut u², all constructed,
and arranged to act upon the upper end of the driver to adjust it to the desired
position.
Twentieth. In combination with the nose 2, a hardened steel bushing made in two
parts divided longitudinally, and fitted in a fixed position in a socket formed in said
nose, substantially as and for the purposes described.
Dated this 16th day of October 1888.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for tho Applicant.