IMPROVEMENTS IN MACHINERY FOR NAILING BOXES
Year: 1874

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
-
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN MACHINERY FOR NAILING BOXES."-
A communication from abroad by John H. Foster, and Charles
E. Culver, both of Chicago, Illinois, United States of America,
Manufacturers.
Sealed the 21st December 1874, and dated the 23rd October 1874.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
'
at the Office of the Commissioners of Patcuts, with his Petition,
on the 23rd October 1874.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR NAILING
BOXES," a communication, to be as follows:-—
The object of this Invention is to make a machine whereby the parts
of the same box may be nailed together along their opposite ends, sides,
or edges; at the same time I also improve the construction and operation

page_text: of various parts of the machine, whether the same are employed in
double or in single machines, as herein-after set forth..
•
I provide a platform or frame, on which the double machine' rests.
The frames of the machines ride in grooved ways in the platform, so
that the said frames and their attachments may be readily arranged at
a greater or less distance from each other on the said platform and
retained in the same straight line. The driving shaft has bearings in
cross bars in the frame and in posts on the platform. A driving wheel
and clutch device is mounted on the said shaft. A forked lever is pivoted
at its lower end to a cross bar of the platform. A short arm has its
lower end also pivoted to a cross bar of the platform, and a connecting
bar is pivoted near its lower end to the said arm, and at its upper end
to the said forked lever. When the clutch engages the driving wheel
the joint connecting the arm and bar to each other has a tendency to
sink, but a pin is passed through the lower end of the bar and resting
in a depression in the arm for the purpose of resisting this tendency.
A bent rod provided with a thumb tomper screw has its lower part
provided with a pin entering a longitudinal slot in the said bar, and a
treadle is connected to this rod. The said arm and bar are thus con-
nected to cach other by means of a knuckle joint, and when a pressure
is exerted in the manner described they operate together as a toggle
for the purpose set forth. Springs are attached to a cross bar of the
frame and to the aforesaid lever for the purpose of rendering the release
of the latter more sudden.
Friction rollers are loosely mounted on the shaft, and pinions are
keyed in a longitudinal groove in the said shaft. Upon shafts which
have bearings in cross bars in the frames I place wheels loosely mounted
on the said shafts and engaged by the said pinions; other pinions
mounted on the said shafts are rigidly attached to the wheels. Vertical
racks engaged by the said pinions are held to their engagement there-
with by means of the aforesaid rollers. The longitudinal groove in tho
shaft permits the roller and pinion in the frame to be moved longi-
tudinally on the said shaft as the said frame is moved in the ways.
Rods connect the frames to each other and retain them in their position
in the ways. These rods are connected to one frame, so as to be
tightened and loosened thereon. By loosening the rods the other frame
may be set at a greater or less distance from the first frame, and the
moveable frame is held in that position by tightening the said rod.

page_text: I provide tables rigidly attached to the tops of the racks, and gates
ride in vertical ways in the frames. Cross bars rest on springs, preferably
rubber blocks, supported on rests attached to the frames. Stops are fixed
on the gates and arranged for contact with the said bars to limit the
downward movement of the gates and prevent too great a vibration.
Projections extend from the gates in such a manner as to strike the
point of the screw as the gates move upward. Vertically adjustable pins
are attached to the said gates and support the tables. Blocks are
attached to the said tables and ride in vertical ways in the gates, and lap
the rear face of the latter, thus retaining the racks in their vertical
position.
Side picces are attached to the said gates, and cross bars rest freely in
horizontal grooves in the said plates; dies or nail holders rest on these
bars, which are beveled. These bars pass through dovetail grooves in
the dies. Cross bars rest in horizontal slots in the frames with screws
passing freely through them, and through threaded perforations in the
other bars. Bevel gear wheels are rigidly attached to the outer ends of
these screws. Shafts resting in bearings attached to the frames carry
bevel gear wheels, which engage the screw wheels. Counterweighted
cranks are attached to the last-named shafts. Screw pins pass through
thic said bars, and are shouldered on each side of the bars. The bars
may be set at a greater or less distance apart from cach other by means
of these pins. They may also be drawn either forward or backward in
the slots in which they rest by turning the cranks for that purpose.
Clips are attached to the said bars, and so as to be adjustable longi-
tudinally. Along the said bars punches depend from the clips and enter
the dies when the latter are carried upward. Spindles or connecting
rods are attached to the dies and pass through the clips.
Slides rest in vertical ways in the frame, and cam grooves or slots are
arranged vertically in the said slides. Other slides rest in horizontal
ways in the frame, and have pins extending into the said slots. The
aforesaid connecting rods enter a slot or pocket in the latter slides.
Springs, preferably rubber blocks, are arranged on these rods. Other
rods connect the slides to the gate in the frame.
Parallel plates are
the body of a nail,
I provide a self-feeding attachment to the clips.
placed sufficiently apart from each other to receive
the nail being suspended between them by the contact of its head with
'

page_text: the upper edges of the plates. The upper edges of the plates descend
sufficiently as they approach the clips to cause the nail to move towards
the latter. Spring jaws arrest the passage of the nails towards the clips.
A lever is pivoted to a standard. A V shaped plate is attached to one
end of this lever, and rests between jaws. The heel of this lever is
arranged to be struck by the aforesaid spindles or rods before the upward
movement of the latter ccases. Screws are provided, by which the
distance between the said plates may be adjusted to nails of different
sizes. Inclined wings attached to these plates for the purpose of
receiving the nails promiscuously, and conducting them to the channel:
between the said plates. An inclined plate is also attached to the said
plates for the purpose of conducting away the nails which do not fall
into the said channel. A tube receives the nails as they are released by
the jaws, and they are thereby conducted into the dies, and thero held
in a position to be driven, the dies yielding to admit of the passage of
the nails through them when the machine is set in operation.
Each of the said machines may be used alone by being connected with
driving mechanism operating substantially as described, and when so
used the grooved platform and the other parts employed for the purpose
of adjusting them with relation to cach other are not essential.
The following is the construction of the clip and dic:-The yielding
grooved jaws, dies, or nail holders are arranged in a case constructed to
receive them. Springs exert a pressure against these jaws. Projections
are formed along the upper and lower ends of the jaws for the purpose
of retaining them in their case, the said projections riding on the upper a
and lower edges of the case.
I sometimes use a double die and punch in connection with a clip.
One of the punches is set a little forward of the other. The double die
consists of a duplication of the single die, the groove or opening in each
die being arranged to receive the punch corresponding to it. The double
dies and punches are intended for the purpose of permitting a doublo
line of nails to be driven along the same end or edge of the box without
a special adjustment of the dies for that purpose. By this means the
nails may also be driven along the centre of the edges of parts differing
from each other in thickness without a special adjustment for that
purpose. These results however may be accomplished by adjusting the
dies in the manner described.

page_text: In some instances the clips and dies are supported on a single bar
occupying the position of the above described bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 22nd April 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of October, 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 William Robert Lake, Her
special licence that I, the said William Robert Lake, my executors,
administrators, and assigns, or such others as I, the said William
Robert Lake, 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 Inven-
tion for "IMPROVEMENTS IN MACHINERY FOR NAILING BOXES," a communica-.
tion to me from abroad by John H. Foster and Charles E. Culver, both
of Chicago, Illinois, United States of America, Manufacturers, upon the
condition (amongst others) that I, the said William Robert Lake, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and scals, 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.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
w in what manner the

page_text: same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Drawing forming a part of this Specification :—
The object of this Invention is to make a machine whereby the parts
of the same box may be nailed together along their opposite ends, sides, 5
or edges at the same time. I also improve the construction and operation
of various parts of the machine, whether the same are employed in
double or in single machines, as herein-after set forth.

page_text: driving shaft, having bearings in cross bars in the frame Band B', and in
posts on the frame or platform A'; D, D', is a "Mason" driving wheel
and clutch device mounted on the shaft C; E is a forked lever engaging
the block D', and pivoted at its lower end to a cross bar of the part A;
F is a short arm, the lower end of which is also pivoted to a cross bar of
the part A, as shewn; F' is a connecting bar, pivoted near its lower end
to the arm F, and at its upper end to the lever E. The parts F and F¹
both lic in or nearly in the same straight line when the clutch engages
the driving wheel, the joint connecting the parts F and F to cach other,
having a tendency to sink below this line during the engagement referred
to; and a is a pin passing through the lower end of the part F, and
resting in a depression in the part F for the purpose of resisting this
tendency; G is a bent rod provided with a thumb temper screw e, as
shown. The lower part of the rod G is provided with a pin e' entering a
longitudinal slot in the part F'. H is a treadle connected to the rod G.
A downward pressure on the treadle sets the clutch and a slight upward
pressure against the point of the scrow e releases it. The parts F and F¹
´are thus connected to each other by means of a knuckle joint, and when
ȧ pressure is exerted in the manner described they operate together as a
toggle for the purpose set forth. c, c, are springs attached to a cross bar
of the frame B, and to the lever E for the purpose of rendering the
release of the latter more sudden.
I, I, arc friction rollers loosely mounted on the shaft C; J, J, are
pinions keyed in a longitudinal groove in the said shaft; C, O¹, are
shafts having bearings in cross bars in the frames B and B¹; K, K, are
wheels loosely mounted on the shafts C³, C', and engaged by the
pinions J, J; J', J', are pinions mounted on the shafts C¹, C¹, and
rigidly attached to the wheels K, K; L, L, are vertical racks engaged
by the said pinions J', J', and held in gear therewith by means of the
rollers I, I. When the clutch and driving whicel are engaged with cach
other the said racks are carried upward, but when the clutch is free they
descend to their original position, their downward movement being
limited in the manner herein-after described. The longitudinal groove,
c¹, Figure 5, in the shaft C admits of the roller I and pinion J in the
frame B' being moved longitudinally on the said shaft as the said frame
is moved in the ways a, a, the said roller and pinion being carried by
the said frame. M, M, are rods connecting the frames B and B¹ to each
other, and retaining them in their position in the ways a, a. The
rods M, M, are connected to the frame B so as to be tightened and

page_text: loosened thercon, and to the frame B¹ in the manner herein-after
described. By loosening the rods M, M, the frame B' may be set at a
greater or less distance from the frame B, and the movable frame is held
in that position by tightening the said rods.
O, O, arc tables rigidly attached to the tops of the racks L, L; P, P, are
gates riding in vertical ways in the frames B and B'; Q, Q, arc cross
bars resting on springs, preferably india-rubber blocks supported on
rests attached to the frames B and B'; R, R, are stops on the gates and
arranged for contact with the bars Q, Q, so as to limit the downward
movement of the gates and prevent too great vibration; S, S, are pro-
jections extending from the gates in such a manner as to strike the
point of the screw e as the gates move upward; T, T, are vertically
adjustable pins attached to the gates and supporting the tables O, O.
U, U, are blocks attached to the tables O, O. These blocks ride in
vertical ways in the gates and lap the rear face of the latter, thus
retaining the racks in their vertical position. The ways in which the
blocks U, U, ride are much longer than the blocks, and the tables may
thus be so adjusted that the upward movement of the gates will not
begin until the tables have moved upward a greater or less distance, as
will be herein-after explained.
V, V, arc side pieces attached to the gates P, P; A', A", arc cross
bars resting freely in horizontal grooves in the plates V, V; D", D"",
are dies or nail holders resting on the bars A', A". The bars A', A",
are bevelled, and the bar A' passes through a dovetail groove in the
dics D and the bar A" passes through like grooves in the dies D¹¹;
E', E, arc cross bars resting freely in horizontal slots in the frames Ba
and B¹; F*, F*, are screws passing freely through the bars E", E", and
through threaded perforations in the bars E', E'; G¹, G', are bevelled.
gear wheels rigidly attached to the outer ends of the screws F*, F* ;
H', ', are shafts resting in bearings attached to the frames B and B¹;
I, I, are bevelled gear wheels carried by the shafts H', H', and engaging a
the wheels G¹, G¹; J", J", are counterweighted cranks attached to the
shafts Œ¹, H¹; K', K¹, are screw pins passing freely through the
bars E", E", and through a threaded perforation in the bars E¹, E', they
are shouldered on each side of the former bars, as shown in Figure 5.
The bars E' and E" may be set at a greater or less distance from cach 3
other by means of the pins K', K', they may also be drawn either
forward or backward in the slots in which they rest by turning the

page_text: cranks J", J", for that purpose; L' and 'L" are clips attached to the
bars E¹ and E", respectively, and so as to be adjustable longitudinally
along the said bars; M², M², are punches depending from the clips and
arranged to enter the dies when the latter are carried upward in the
manner herein-after described; N', N₁, are spindles or connecting rods
attached to the dies and passing freely through the clips. By these
means the dies may be carried either forward or backward, according to
the directions in which the cranks J", J", are turned. The dies D",.D",
may also be set in one line, and the dies D, D", in another by means
of the pins K', K. The dies are also longitudinally adjustable on the
bars which support them.
O', O', Figures 8 and 9, are slides resting in vertical ways in tlie
frame B'; p, p, are cam grooves or slots arranged vertically in the
slides o', o'; P¹, P¹, are slides resting in horizontal ways in the frame B';
p', p', are pins extending from the slides P1, P2, into the slots p, p. The
rods M, M, enter a slot or pocket in the slides P¹, P¹, and Q', Q', are
springs, preferably india-rubber blocks, arranged on the rods M, M. These
blocks are retained upon the rods by means of a small nut run upon the
end of each rod, and the blocks rest against the slides P1, P1, as shown;
R¹, R¹, are rods connecting the slides O', O', to the gate in the frame B'.
The cams p, p, are so formed that their inclined parts during the upward
movement of the gate will reach the pins p³, p', and draw the frame B¹
slightly towards the frame B just before the nails enter the box. The
motion lost by the yielding of the blocks Q, Q', should be very slight.
If the frames B and B¹ are arranged at such a distance from each other
that a box may be readily inserted between the paid frames and arranged
on the tables O, O, the forward movement of the frame B' will press
the box firmly between the frames while the nails are being driven.
When the clutch is released all the parts return to their original position
automatically.
S' is a self-feeding attachment to the clips; T', T', are parallel plates
sufficiently apart from each other to receive the body of a nail, the nail
being suspended between them by the contact of its head with the upper
edges of the plates. The upper edges of the plates descend sufficiently
as they approach the clips to cause the nail to move towards the latter.
U', U', are spring jaws which arrest the passage of the nails towards the
clips; V' is a lever, and V" is a standard to which it is pivoted; vis a
V shaped plate attached to one end of the lever V' and resting between

page_text: the jaws U¹, U¹; v₁is the heel of the lever. This heel is arranged to be
struck by the rods N', N¹, a little before the upward movement of the
latter ceases, it being understood that a self-feeding attachment is
applied to each clip. When the heel is thus struck the plate v moves
downward, separating the jaws U', U', which then release the nail
adjacent to them. By the time this nail is released the plate v has
descended sufficiently to stop the movement of the next succeeding nail.
When the lever is released the jaws close and return it to its original
position, and the passage of the nails is again obstructed by the jaws.
are screws by means of which the distance between the plates
T, T, may be adjusted to nails of different sizes. These screws are
similar in their construction and operation to the screws K', K'. B", B",
are inclined wings attached to the plates T, T¹, for the purpose of
receiving the nails promiscuously and conducting them to the channel
between tho said plates; C" is an inclined plate, also attached to the
plates T, T, for the purpose of conducting away the nails which do not
fall into the said channel; D is a tube into which the nails pass as
fast as they are released by the jaws U¹, U¹, and they are thereby con-
ducted into the dies and thero held in a position to be driven, the dies
yielding to admit of the passage of the nails through them when the
machine is set in operation. Instead of employing a self-feeder the nails
be arranged in the dies by an attendant.
may
In order to nail together the parts of a box by means of the said
double machine the frame B¹ is first so adjusted that the parts to be
nailed together may be readily arranged on the tables O, O, leaving a
small space between the parts of the box and the frames. The number
of clips and dies should correspond with the number of nails to be
driven at the same time or during cach upward movement of the tables.
The clips and dies should then be arranged at suitable distances apart
from cach other and in a line corresponding to the line in which the
nails are to be driven into the box.
If a double line of nails is to be driven into the same end or edge of
the box each alternate clip and dic should be moved forward by means
of the screws K', K', in the manner above described.
The dies are
.
struck by the ascending parts of the box, and the gates P, P, arc thus
carried upward. Other parts however may be arranged to be struck by
the parts of the box so that the gates will be thereby carried upward.
The plates V, V, for example may be so arranged, but I deem it

page_text: preferable to arrange the dies so that they will be struck for the purpose
set forth, and to arrange the plates V, V, so that they will be struck by
the parts of the box in case the dies yield, thus preventing the dies from
receiving too great a strain. The tables should also be so adjusted
vertically that the parts of the box may be conveniently arranged ·|
between them and the dies, additional room being also left for the
insertion without a special adjustment of the opposite side piece of tho
box after the first side is nailed. The point of the screw e is also set to
be struck by the projections S, S, as soon as the nails are sufficiently
driven, thus stopping the upward movement of the tables at the proper
time by releasing the clutch. Two ends, sides, or edges are thus nailed
simultaneously, and by turning the box over and arranging the parts in
their proper position the remaining parts may be nailed together in like
manner. If the breadth of the box is not equal to its depth the vertical
adjustment of the tables is made to correspond to the greater dimensions.
When the boxes are longer than they are deep a special adjustment of
the frame B¹ must be made in order to nail the bottom to the sides, but
with these exceptions the operation of the machine is automatic, it being
understood that it is set in motion by depressing the treadle.
It will be perceived from the foregoing description that the machines
which constitute the double machine are so adjustable that they may be
adapted to boxes of different sizes.
Each of these machines may be used alone if connected with driving
mechanism operating substantially as described, and when so used the
grooved platform and the other parts employed for the purpose of
adjusting them with relation to each other are not essential.
In using
the said machines separately one end or edge of the box will be nailed
by each upward movement of the table, and the latter should be
sufficiently broad to firmly support the parts of the box. When a single
machine is used I'deem it preferable to arrange the driving wheel, clutch,
and treadle in front of the machine and below the table, as shown in
Figure 10.
The construction of the clip and die is fully shown in Figures 3, 4,
11, and 12, wherein e", e", represent the yielding grooved jaws, dies, or
nail holders, arranged in a case constructed to receive them, one side of
this case being represented as removed in Figures 3 and 4; e¹¹¹, e¹¹, are
springs exerting a pressure against the parts e", e"; et, e¹, are projections
along the upper and lower ends of the parts e", e", for the purpose of

page_text: retaining the said parts in their case, the said projections riding on the
upper and lower edges of the case respectively. The springs shown in
Figure 3 are spiral springs, but the form of springs shown in Figure 4
may be employed in lieu thereof. e* is a removable brace, employed in
connection with the form of spring shown in Figuro 4, and in using the
form of spring there shown the projections e, e', should project
sufficiently to retain the springs in the case as shown.
In Figures 11 and 12 a double die and punch arc shewn in connection
with a clip. It will be observed that one of the punches is set a little
forward of the other. The double dic consists of a duplication of the
single die, the groove or opening in each dic being arranged to receive
the corresponding punch. The double dies and punches are intended
for the purpose of permitting a double line of nails to be driven along
the same end or edge of the box without a special adjustment of the dies
for that purpose. By this means the nails may also be driven along the
centre of the edges of parts differing from cach other in thickness with-
out a special adjustment for that purpose. These results however may
be accomplished by adjusting the dies in the manner described.
In the arrangement of clips and dics shewn in Figures 3, 4, 11, and 12
the clips are intended to be supported on a single bar occupying the
position of the bars E, E, and the dies by a single bar occupying the.
position of the bars A', A", and for that purpose the single bars pass.
through the slots c". As the single machines are designed to operate
upon boxes smaller than those to be nailed by the double machine, and
consequently upon lighter lumber, a double row of nails along the same
end or edge of the box will seldom be required, but when required the
double clips and dies will under ordinary circumstances be sufficient for
that purpose. The means employed for the purpose of adjusting the
dies in a double row along the same end or edge of a box in the double
machine are not essential in a single machine, and the latter is therefore
provided with dies, clips, and punches, constructed in the manner shewn
in Figures 3, 4, 11, and 12.
The clips and their attachments are removable from the machines, :
and those employed in connection with the double machine are con-
structed like those shown in Figures 3 and 4, excepting that the latter
are made to rest on single bars, while the former rest on double bars and
are adapted thereto in the manner shewn and described.

page_text: Having thus fully described the said Invention, as communicated to
me by my foreign correspondents, and the manner of performing the
same, I wish it understood that I claim,―
First. A double box nailing machine consisting of two simultaneously
operating machines, arranged as above described with relation to cach
other, for the purpose of operating together along the ends or sides of
the parts of the same box, one of the said machines being adjustable in
relation to the other for the purpose of thereby nailing together boxes of
different sizes.
Second. A box nailing machine consisting of two simultaneously
operating machines connected by means of the rods or bars M, M,
adjustably attached to one of the machines, and operating in connection
with cams in the other, as above described, for the purpose
of thereby
.rendering the machines adjustable with relation to cach other, and
tightening the grip of the machines upon the parts of the box during the
operation of nailing.
"
Third. A box nailing machine provided with two or more box
supporting tables horizontally adjustable with relation to each other, as
herein set forth and for the purpose specified..
Fourth. A box nailing machine provided with dies or nail holders,
and corresponding punches or drivers, arranged as herein described with
relation to one or more edges of the box, one or more of the said dies
and punchers being horizontally adjustable in a line at or nearly at right
angles to the line or lines occupied by other like parts, as herein set
forth and for the purposes specified.
Fifth. The combination of the table O, rack L, pinion J, vertically
adjustable pin T, and the gate P provided with projections arranged
for contact with parts of the box during the upward movement of the
table.
Sixth. The combination of the clip supporters E¹ and E" resting freely
in horizontal grooves in the frame, clips L', L", dics D", D¹¹¹, bars A¹
and A" resting freely in the horizontal ways in the gate P, and pins
K', K', as herein set forth and for the purpose specified.
Seventh. The combination of the screws F*, F*, wheels 'G¹, G¹, hori-
zontally sliding clip supports E", crank shaft H', and wheels I, 1,
as herein set forth and for the purpose specified.

page_text: Eighth. The combination of bars A², A", gate P, dies or nail holders
D", D¹, supports E³, E", clips L, L", and spindles N¹, N¹, as herein set
forth and forth the purpose specified.
Ninth. The rod G connected to the clutch operating mechanism, and
provided with the vertically adjustable temper screw e, in combination 5
with the gate P provided with a stop arranged to strike the point of the
said screw during the upward movement of the gate, as herein set forth
and for the purpose specified.
Tenth. The clips provided with one or more punches in combination
with the spindles passing freely through the clips and provided with one 1
or more dies or nail holders rigidly attached thereto and arranged to
receive the punch or punches, as herein set forth and for the purposes
specified.
Eleventh. The combination and arrangement of the shafts C and C',
friction wheel J', and vertically adjustable rack L, provided with the 1
table O, as herein set forth and for the purposes specified.
Twelfth. The self-feeding attachment provided with the yielding
jaws U, U', in combination with the lever V₁ provided with the V shaped
stop v, as herein specified.
In witness whereof, I, the said William Robert Lake, have here- 2
unto set my hand and seal, this Twenty-first day of April, in
the year of our Lord One thousand cight hundred and seventy-
five
Witness,
HY. JA. NOONE.
1
W. ROBT. LAKE. (L.S.)