Improvements in Skiving Machinery for Skiving Off or Bevelling Boot and Shoe Counters, or like use.
Year: 1898

page_text: Date of Application, 14th Mar., 1898
Complete Specification Left, 6th Dec., 1898-Accepted, 21st Jan., 1899
Improvements in Skiving Machinery for Skiving Off or Bevelling
Boot and Shoe Counters, or like use.
A communication by WILLIAM J. YOUNG, of Lynn, in the State of Massachusetts
one of the United States of America, Manufacturer.
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the County of
London, Chartered Patent Agent, do hereby declare the nature of this invention to be
as follows:-
The present invention relates to skiving machines and more particularly to a skiving
machine for skiving off or bevelling boot and shoe counters.
The object of the present invention is to produce a counter skiving machine which
shall be simple in construction and quick and efficient in action, and to so arrange the
skiving mechanism that there shall be no danger of cutting or injuring the hands of
the operator.
To the above end the present invention consists of the devices and combinations
of devices which will be hereinafter described and claimed.
The present invention is illustrated in the accompanying drawings in which,
Figure 1 illustrates a front elevation of a machine embodying the same.
Fig. 2 illustrates a side elevation of the machine looking from the left of
Fig. 1.
Fig. 3 illustrates a top plan view of the front portion of the machine.
Fig. 4 illustrates a top plan view of the rear portion of the machine, parts being
broken out to show underlying parts.
Fig. 5 is a fragmentary view of a portion of the machine, parts being shown in
front elevation, and other parts being in section.
Similar letters of reference designate corresponding parts throughout the several
views of the drawing.
Before proceeding to a detailed description of the present invention, it may be
stated that the machine generally speaking, has a work supporting table and a knife
block carrier, which have relative movements towards and from each other to place
the material on the work support, in position to be acted upon by the skiving knife,
and also said knife carrier and work support have relative movements longitudinally
with relation to their length, in order to skive and bevel off the projecting edge of
the material, and while in the machine of the drawings which will be hereinafter
described in detail, the relative movements of the work support and knife carrier
towards and from each other, are produced by a movement of the work support
towards and from the knife block carrier, and the relative longitudinal movements of
the work support and knife block carrier are produced by a longitudinal reciprocation
of the knife block carrier with relation to the work support, the present invention
is not limited thereto, as the relative movements described may be produced by
moving the knife block carrier towards the work support, and the work support
be moved longitudinally with relation to the knife carrier.

page_text: In the drawings, A represents a suitable supporting frame which may be of any
convenient form and arrangement to support the working parts of the machine, said
frame in the machine of the drawing comprising a base a, upon the upper surface
of which are vertically projecting standards a¹, a² and aº.
In the standards a¹ and a² are suitable bearings a³ and a* in which is mounted to
rotate a shaft B, said shaft being provided with a driving pulley b arranged to be
driven by a belt from any suitable source of power, the pulley 6 being loose on
said shaft, and having a beveled inner face b¹, which is arranged to engage the beveled
face of a clutch pulley b³, fixed to rotate with said shaft, the pulley b being
arranged to have a slight movement along the shaft B, whereby the beveled
faces b¹ and 6 of the pulleys b and 63 are brought into contact, and motion imparted
to the shaft B from the constantly running pulley b, and when the beveled faces
are disengaged, the shaft B will be at rest. Mounted in suitable bearings a³
formed in a standard a upon the upper surface of the base a and extending
parallel to the shaft B, is a shaft B¹, said shaft B¹ being driven from the shaft B
by means of a pinion 6 fixedly secured to shaft B and gearing with a gear 65
fixedly secured to the shaft B¹.
The front of the standard a¹ is formed with projecting portions or ribs a? and a
which are cut out or rabbeted as at aº, said rabbets a in connection with a plate a¹º,
secured to the projecting portion a7 by bolts a¹, and a plate a12 secured to the
projecting portion a³, forming a guideway for the reciprocating knife block carriage C,
which as will be hereinafter described is arranged to have a reciprocation along
said guideway.
The carriage C comprises a rectangular plate, the upper and lower edges of which
fit into guideways in the front of the standard a', and in the machine of the
drawing, said carriage is arranged to be reciprocated along said guideways by a
link
which is pivoted at c¹ to the back of said carriage, and which at its opposite
end is pivoted at c² to a crank pin c³, carried by a disk c affixed to the shaft B¹.
The above arrangement is such that a rotation of the main shaft B will rotate
the shaft B¹ and through the link c impart a reciprocating movement to the
carriage C.
Lpon the front face of the carriage C is mounted a knife block D, said knife
block having secured to its under face suitable skiving knives d, and in order that
said skiving knives d may have their cutting edges presented at the proper cutting
angle to the stock to be skived, which will be upon the work support, said knife block
in the machine of the drawing, is fulcrumed to oscillate upon the carriage C to lower
one knife and raise the other automatically, according to the direction of travel of
said carriage, and in the present invention, the oscillation of the knife block is
arranged to be automatically performed by the following mechanism :
The knife block D comprises a plate or casting which has a vertical or upright
portion and a horizontal portion d, the vertical portion being fulcrumed at d³
to the carriage C, and the horizontal portion carrying the skiving knives d, said
knives & being secured in position on the under face of the horizontal portion d² of
the knife block D, with their cutting edged d' arranged outwardly or at opposite ends
of the knife block, as clearly shown in Fig. 5 of the drawing.
In the machine of the drawing, when the carriage C is moving in the direction of
the arrow shown in Fig. 5 of the drawing, the knife block D will be in the position
shown in said figure with the right hand end depressed to bring the skiving knife at
that end in proper angular position to engage and skive the stock upon the work
support, and just as it completes its stroke in the direction indicated, the knife
block will be automatically oscillated and the opposite end depressed to bring the
knife, on the left in cutting position for action on the return stroke of the
carriage C. Suitable latches or locking devices are provided to hold the knife
block in either of its positions during the action of the cutters and these latches
are arranged to be automatically released as the carriage C reaches the limit of
its stroke in either direction.

page_text: The automatical oscillating and locking mechanism of the knife block D in the
machine of the drawing, comprises suitable plungers or rods d³, which are mounted
to slide in suitable bearings d', carried by the plate a¹, said rods having heads or
enlargements d' upon their outer ends in order to limit their movement in one
direction, or towards each other. Said rods are surrounded by suitable coiled
springs ds which bear at one end against the inner surface of the end bearings do,
and at the other end against a shoulder & formed upon said rods, whereby the rods
will be normally pressed towards each other or towards the medial line of the
machine.
Upon the upper edge of the knife block 1) is a projection d*, which is arranged
to come into contact with the inner ends of the rods d³ upon the reciprocation
of the carriage C, and move said rods in their bearings against the tension of
the springs; it being understood that the projection d will engage the rod towards
which it may be moving.
After the projection * has engaged the end of the rod 5 towards which it may be
moving, the further movement of the carriage C and knife block D will cause the rod
to move backwardly in its bearings and the spring to be compressed, and just before
the carriage C reaches the limit of its stroke the rod d then in contact with the
projection d will be exerting considerable pressure upon said projection, such
pressure being sufficient upon the unlocking or releasing of the knife block D to
swing said knife block upon its fulcrum d³ to depress its opposite end, in which
position it will be locked for the return movement of the carriage C.
As shown in the drawings, the machine comprises spring bolts which are arranged
to automatically lock the knife block as it is oscillated, and suitable means are
provided for releasing the bolts, as the carriage C reaches the limit of its stroke in
either direction, in order to permit the knife block D to be oscillated and tilted for
the return stroke.
The locking and releasing mechanisin of the machine of the drawing comprises
bolts E, which are arranged to have a sliding motion in suitable bearings e formed in
the knife block D, suitable springs e¹ in said bearings acting upon the inner ends of
said bolts to normally press them outwardly; and the outer ends of said bolts E
are arranged to engage the curved faces e² of suitable blocks or keepers e³, carried by
plates e secured by bolts to the ends of the carriage C, said keepers being
provided below the curved faces e² with notches e, with which the bolts E are
arranged to engage as the ends of the knife block D are depressed.
The keepers are slotted as shown at e7, and projecting into and through these
slots are pins or projections es, formed on the ends of the bolts E, said pins es being
arranged to be engaged by suitable stops or arins e³, formed on upwardly projecting
arms el carried by the plate a¹², said stops e acting to force the pins es inwardly
against the tension of the springs e¹ to thus remove the bolts E from the notches e
to release the knife block and permit the plunger d³, then in contact with the pro-
jection d to swing the knife block D on its fulcrum, raising one end and depressing
the other end for the return movement of the carriage C.
It will thus be seen that the knives d are alternately raised and lowered to be
brought into operative engagement with the work, one knife cutting as the
carriage C moves in one direction, and the other knife cutting as the carriage moves
in the opposite direction.
In this connection, I desire to state that in so far as my correspondent is at present
advised of the state of the art, it has never been proposed to provide a reciprocating
knife block or carrier with two cutters and means to automatically move said
cutters into and out of operation upon the reciprocation of said knife block, and
while in the illustrated embodiment of my invention, I attain this result by an
oscillating knife block, I do not consider my invention as limited thereto, but intend
to claim the same in the broadest, legal sense.
As before stated, the knives are secured to the underside of the horizontal
portion d2 of the knife block with their cutting edges d' arranged at opposite ends,
and in advance of the cutting edges d' are arranged suitable pressers to engage the

page_text: counter or other material to be skived in advance of the cutting edges, to press said
counter against the work support, and moving along with said cutters, smooth out
the material for the action of said cutters, and in the case of skiving counters where
said counter is laid upon a die faced cutting bed, into which said counter is pressed
and the portion of the counter projecting above the recess, skived off, the pressers
act to force said counter into the recess of the bed, as the knife advances to skive off
the projecting portion of the counter.
The pressers in the machine of the drawings, are shown at F and comprise a
number of small bell crank levers f, which are fulcrumed upon rods f², said rods f²
being supported by the vertical portion d', and by a plate p* secured by bolts p¹* to
the portion on the knife block D. The lower ends of the bell crank levers ƒ are
rounded as shown to engage the work and the upper ends of said levers rest against a
cushion 5, said cushion comprising a block of rubber or other suitable material,
arranged to perinit the independent yielding of the levers f, whereby they will be
adapted to conform to the inequalities of the material being skived.
The cushions f are arranged in recesses f* formed in the brackets fa secured to
the knife block D by bolts f, and suitable adjusting screws f are tapped into
apertures in the brackets arranged to bear upon the rear faces of said cushions, for the
purpose of adjusting the pressure of the same.
In order to adjust the position of the lower ends of the levers with relation to
the cutting edges of the knives d, bars fo are adjustably held in contact with the
inner faces of the upper ends of said levers, said bars f8 being acted upon by
suitable adjusting screws fº, whereby the said bars f8 may be moved back and forth
with relation to the cushions f³ to raise and lower the lower ends of the levers f.
The knives d in the present invention are held in position by an undercut rib g
formed along the back of the underside of the horizontal portion d² of the knife
block and by plates g¹, having undercut ribs g2, which are fastened to the front of the
portion of the knife block by the bolts p, the ribs 7 and 92 engaging the side
edges of the kuives d and holding them securely in position.
The work support II in the machine of the drawing comprises a substantially
rectangular table h, which is arranged for a vertical movement towards and from the
knives d, said table having a removable die plate h¹ upon its upper surface in which
is formed a recess or die into which the counter to be skived is depressed, leaving
portions of the edge projecting to he cut off by the skiving knives d, said die plate h¹
being cut away at its central portion as shown at h³ for a purpose to be hereinafter
described.
The table H is provided with a depending shank or stem which is arranged to
have a vertical reciprocation to elevate and lower the table H in a guide formed in
a projection on the front of the front base a, and said shank or stem is retained
in said guide by a plate h, secured to the front of snid projection hy
screws h
The able H is raised by a cam h" which engages a cam roll 10, mounted upon the
rear face of the shank h', said cam roll being preferably mounted in an eccentric
stud and which has a threaded portion around its periphery, which is engaged by a
screw h¹¹, whereby said stud may be turned to adjust the vertical throw of the table
or work support H.
The cam ho is carried by a rock shaft K, which is mounted in suitable bearings in
the base a, and in a bearing k in a short standard k, said shaft carrying a belt
pulley which is connected by a belt with a pulley k on the shaft B.
The shaft K is a rock shaft arranged to be turned sufficiently to cause the cam to
raise the table or work support H, and to be turned in the opposite direction to
reverse the cam and permit the shank and table H to fall by gravity, by means of a
spring, which is connected at its upper end to a fixed bar ko and at its lower end
to a lug 7, carried by a collar fixedly secured to the shaft K. The clamp for
clamping the counter in position upon the die plate h¹ of the work support His
arranged to automatically clamp the counter upon the elevation of the

page_text: work support and to release said counter upon the depression of said work
support.
The clamp in the machine of the drawings comprises a yoke M arranged as shown
to cross the bed or work support H, the legs m of the yoke passing through
bearings m¹, on a fixed portion of the machine and surrounded below said bearings
with coiled springs m², said springs m³ being confined between the lower ends of said
bearings and suitable heads m³ formed on the legs m, the cross bar m² of the yoke M
being arranged to draw the central portion of the counter down into the cut out
portion of the die plate h¹, and against a stationary clamping plate m³, secured in
a groove me in the bed or table H, the upper surface of said clamping plate and
the under surface of the cross bar m³, being roughened or serrated in order to
frictionally grip the counter.
The above arrangement is such that as the table or work support H rises, the
counter will come in contact with the cross bar m' of the clamp M just before the
table has reached the limit of its upward movement, and in the further upward
movement of said work support, the clamp will draw the central portion of the counter
down into the recess h³ in contact with the plate m³, the springs m² yielding in the
further upward movement of the work support, thus yieldingly, but firmly clamping
the counter in position to be acted upon by the knives d, and upon the lowering of
the table or work support H, the counter will be automatically released as will be
clearly apparent from an inspection of the drawings.
In the present invention, the mechanism which actuates the knife carriage and the
mechanisin which acts to raise the work support, are controlled by suitable clutches
and connecting inechanism, so arranged that a downward depression of a foot
treadle (not shown) will cause the rock shaft K to be turned to raise the work support H,
and hold said support raised, with the material to be skived clamped thereon in
position to be acted upon by the skiving knives, and to thereafter rotate shaft B
to impart motion to shaft B¹, to cause a reciprocation of the knife carriage C, and
to automatically stop after one excursion of the knife carriage, leaving said carriage
in its starting position and the work support lowered.
In the machine of the drawings, this mechanism is so arranged that motion being
imparted to the shaft K to raise the work support, said shaft, through connecting
mechanism acts to connect the constantly running pulley b with shaft B,
to thus impart a rotation to such shaft and shaft B' to reciprocate the knife
carriage C.
To secure the above suggested result in the machine of the drawings, the pulley k²
is loosely mounted upon the shaft K and free to turn thereon, and said pulley k²
is constantly driven by the belt ³ from pulley, which is connected to and driven by
the pulley b. The pulley k² is arranged to be locked to the shaft K by a suitable
clutch mechanism, comprising a friction surface carried by an element fixed on said
shaft, and a friction surface curried by a part movable along the shaft K, towards and
away from the fixed element. As shown, the fixed friction surface may be formed on
a pulley p which is secured to the shaft K, and the movable friction surface may be
formed on the pulley ², said pulley being moved towards and away from the pulley p
by a fork p¹, which takes into a groove p² carried by a hub p³ formed on the pulley ².
The fork p¹ is formed on one arm of a bell crank lever p4, which is fulcrumed at p' to
the frame a, and the opposite end of said bell crank lever is connected by means of a
link or rod p to a foot treadle (not shown).
Upon shaft K is fixed a collar p² from one face of which projects a pin p³, which
is arranged the engage the hooked end p³ of a rod po when the shaft K is rocked,
which rod controls the clutch mechanism, which connects the pulley 6 and shaft B, as
will now be described.
The pulley b is moved towards and from the pulley b³ by a lever t, which is
fulcrumed at t to the standard a², and which at the upper end is provided with a
collar which engages a groove 13, formed in a hub t of the pulley k, which is fixed
to the pulley b, and said pulleys are moved in one direction to bring the clutch
faces 6 and 62 into frictional engagement, by means of a spring 15, which at one end

page_text: is connected to the lower end of the lever t and at the other end to the standard a²,
preferably by means of an adjusting bolt to.
The levert is moved against the tension of spring to move pulley b away
from the pulley 6³, to disconnect the clutch faces 61 and 2 by the following
mechanism :
A link is pivotally connected at u¹to the lower end of the lever and at its
opposite end said link is pivotally connected at u³ to a link u³, said link being pivoted
at u to the top of base a. A lateral movement of the link us about its pivot u¹
towards the left in Fig. 4, will exert a forward pull upon the link u, thus moving the
lever against the tension of spring to disconnect the clutch faces b¹ and 62, and 1
a lateral movement of the link u³ in the opposite direction, or towards the right will
permit the link t to be drawn back by the spring 5, thus moving the pulley b towards
the pulley 63 to bring the clutch faces b¹ and 62 in contact, as will be clear from an
inspection of Figs. 2 and 4. The lateral movement of the link u' is imparted by the
shaft w which shaft is mounted to have a longitudinal sliding movement and a rocking 1
movement in the bearings w¹, and said shaft w has a fixed grooved collar 2 (see
dotted lines Fig. 4), which collar engages a roller u³ mounted upon the pivot u
of the links u and u³.
The shaft wis moved longitudinally in one direction by a spring w³, which is coiled
upon said shaft, one end of such spring bearing against the bearing w at the left of
the machine, as shown in Fig. 4, and the other end of said spring bearing against the
grooved collar w³. The shaft w is moved in the opposite direction against the tension
of spring by a lug w, which is fixed to the rear face of the gear 65 and which is
arranged to engage a lug ws, carried by a collar w, fixed to the left hand end of the
shaft w.
When the lug w engages the lug 5 and moves the shaft w laterally to the left as
shown in Fig. 4, it causes said shaft means of the grooved collar u to swing the
forward end of the link us to the left, thus pulling forward upon the link u, and
disconnects the clutch faces b¹ and 62, thus stopping the rotation of shaft B and the
movements of the knife carriage C, and said parts will remain at rest so long as the
lug is held by the lug w.
A rocking of the shaft w in its bearings will move the lug w away from the rear
face of the gear 66, and disengage the same from the lng w¹, thus permitting the
spring to move the shaft to the right, which swings the end of the link us to the
right and permits the spring t to draw back the lower end of the lever t and throw
the clutch faces 61 and 62 into contact to start the rotation of the shaft B, and the
movement of the knife carriage C. It is designed that as soon as the shaft w has
been rocked to remove the lug to' from engagement with the lug w and moved to
the right by the spring w³, as described to start the shaft B, that said shaft will be
instantly returned to its former position in order to place the lug in position to be
engaged by the lug was said lug w comes around to the stopping position, to stop
the rotation of shaft B.
To secure the above suggested result and also to provide for a stopping of the
reciprocation of the knife block carriage C, independently of the backward rocking
of the shaft K and the lowering of the work support H, the connection between the
link p10 and the shaft wis a loose connection arranged to be automatically disconnected
when the shaft w is moved laterally by the spring w³, and connected when the shaft w
is pulled laterally by the lug w².
This connection comprises a collar w which is loosely mounted upon the shaft w,
and through which the shaft is free to move. The collar w' has a projecting arm w
to the outer end of which the rod p10 is pivotally secured, and said collar is arranged
to be rocked in one direction by a downward pull on said rol, and to be returned by
a spring w, which is connected at one' end to said collar, and at the other end to a
fixed portion of the frame.
Fixed to the outer or right hand end of the shaft w is a head w10 in which is formed
a suitable bearing wll, receiving a stud or pin 2012, which is arranged to have a free
sliding movement therein, and which is normally projected as shown in Fig. 4 of the

page_text: drawing, by means of a spring w¹3 which is located in the bearing w11, and which acts
upon the inner end of said stud. The stud w12 is arranged to engage an aperture w¹4
formed in a lug w15, projecting from the collar w when the shaft w is moved laterally
towards the left in Fig. 4, so that the collar w will be locked to the shaft w to rock
said shaft when the rod po is drawn down to remove the lug w from contact with
the lug w. A movement of the shaft w to the right under the action of the
spring w, will remove the stud 2012 from the aperture 14, thus disconnecting the
shaft w from the collar w', when said shaft will be immediately returned to the position
shown in Fig. 4, by a spring tole which at one end is connected to the collar w³ on
said shaft, and at its other end to a fixed part of the frame.
By the above arrangement, the shaft w may be returned to the position shown in
Fig. 4 to place its lug w' in position to be engaged by the lug w, before the rod plo
is released by the rocking of the shaft K, so that work support may be held in its
raised position until the knife block carriage has been made a complete recipro-
cation.
When the shaft w is moved to the left by the lug wt, engaging the lug w³, the
inner face of the head 10 will be brought close to the outer face of the collar w³, the
stud w being forced into its bearing against the tension of the spring wls, and as
the collar w is rotated backward by the release of the rod p10 as the shaft K is rocked
to lower the work support, the stud 2012 will be forced into the aperture w¹, as said
aperture comes opposite the said stud, whereby the shaft w and the collar w³ will be
locked together, and said shaft will be rocked upon a downward pull of the rod p²º.
In order to properly position the counter to be skived upon the work support H, I
have provided suitable guides or gauges arranged to contact with the edge of the
counter, and have arranged such guides or gauges in such manner, that when the
work support H is lowered, the guides or gauges will project above the upper surface
of the work support, and when said work support is raised, said guides or gauges will
be below the surface of the work support, so as to be out of the way of the reciprocating
skiving knives.
The guides or gauges in the machine of the drawings comprise suitable vertically
extending pins or rods x, which rods at their lower ends are adjustably connected to
suitable brackets or arms x¹, fixed to the base a, said rods x passing through
bearings in the work support H. The rods are adjusted to bring their upper
ends in such a position that when the work support H is lowered, said rods will
project above the surface thereof, as clearly shown in Fig. 1, but when said work
support is raised to bring the counter thereon in position to be acted upon by the
skiving knives, the ends of said rods will fall below the surface of the work support,
and be out of the way of the reciprocating knives.
In the operation of the machine of the drawings, the counter is placed upon the
upper surface of the work support, and properly positioned by means of the rods x,
the depression of the treadle (not shown) causes the rod po to actuate the bell crank
lever p, causing the fork p' to move the pulley k towards the disk p, thus locking
the pulley to the shaft K and rocking the shaft K to cause the cam ho to raise the
work support towards the reciprocating knife carriage, the vertical movement of the
work support causing the clamp M to clamp the central portion of the counter, and
hold it fixedly in position on the work support as hereinafter described.
The rocking of the shaft K has caused the pin p8 to, engage the hooked end of the
rod p, drawing down said rod and through the collar w, rocking the shaft w to
remove the lug w from contact with the lug w, thus permitting the spring us to
move the shaft w to the right and disconnecting said shaft from the collar w, and
causing the collar 20 on said shaft to move link u³ laterally to the right as shown
in Fig. 4, and permitting spring to to rock the levert to move the pulley b
owards the pulley 6s to bring the clutch faces 61 and 62 in contact to impart a rotary
notion to said shaft B. The rotation of shaft B will by means of the gear b* and b³
mpart a rotation to shaft B¹, and through the link c, reciprocate the knife block
arriage C, as before explained.
The knife block D in Fig. 1 is shown in a horizontal position, being a

page_text: position of inactivity intermediate between the extreme oscillations of said knife
block D. In Fig. 5, however, the knife block D is shown in position in which it
works on a lateral reciprocation towards the right. In this position, the knife d at
the right hand end of the knife block D, as said knife block is moved towards the
right, will engage the portions of the counter projecting above the die plate h, and
skive off and remove said portions.
As the knife block carriage C reaches the limit of its stroke towards the right, the
lug or projection d* on the knife block D engages the spring plunger d³, and upon its
continued movement towards the right, moves said plunger thus compressing its
spring, and as the finger es of the bolt E comes in contact with the arm e, said bolt
will be forced back against the tension of the spring e, and its end removed from the
notch e, thus permitting the plunger d³ to oscillate or rock the knife block D on its
pivot, raising the right hand end of said knife block and lowering the left hand end,
the bolt on the lowered end locking said knife block for its return stroke, and as said
knife block returns, the knife d on the left hand end of the knife block will skive off
the projecting portions at the left hand end of the counter, and as the knife block
carriage C reaches the limit of its stroke to the left, the bolt E on the left will be
released in a manner before described, permitting the plunger at the left hand end of
the machine to oscillate the knife block, and set it in position shown in Fig. 5, for
another cycle of operation.
As soon as the shaft w was released from the collar w7, the spring 2016 returned said
shaft to the position shown in Fig. 4, placing the lug w on said shaft in the position
to be engaged by the lug w on the rear gear 65, and as the lug w engages the lug 10,
the rotation of the gear 6 will cause the shaft w to be moved laterally to the left,
against the tension of the spring us, thus moving the link u³ to the left, and by
means of the connecting rod u draw forward the lower end of the lever t, causing
said lever to move back the pulley b along the shaft B, disconnecting the clutch
faces 61 and 62, and stopping the rotation of the shafts B and B¹, and the reciproca-
tion of the carriage C, whereupon the operator removes his foot from the treadle,
thus disconnecting the pulley 2 from the shaft K and permitting the spring k to
rock said shaft backwardly to lower the work support, and also permitting the
spring to turn the collar w' in position to bring the aperture we in line with the
stud w, whereupon the stud w12 will engage the aperture 2014, and lock shaft w to
the collar w to be again actuated as hereinbefore described.
Did the 14th dow of auch 1908
Improvements in Skiving Machinery for Skiving Off or Bevelling
Boot and Shoe Counters, or like use.
A communication from abroad by WILLIAM J. YOUNG, of Lynn, in the State of
Massachusetts, one of the United States of America, Manufacturer.
4
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the Ceunty of
London, Chartered Patent Agent, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described 4
and ascertained in and by the following statement :―
The present invention relates to skiving machines and more particularly to a
skiving machine for skiving off or bevelling boot and shoe counters.

page_text: The object of the present invention is to produce a counter skiving machine
which shall be simple in construction and quick and efficient in action, and to so
arrange the skiving mechanism that there shall be no danger of cutting or injuring
the hands of the operator.
To the above end the present invention consists of the devices and combinations
of devices which will be hereinafter described and claimed,
The present invention is illustrated in the drawings left with the Provisional
Specification in which
Figure 1 illustrates a front elevation of a machine embodying the same.
Figure 2 illustrates a side elevation of the machine looking from the left of
Figure 1.
Figure 3 illustrates a top plan view of the front portion of the machine.
Figure 4 illustrates a top plan view of the rear portion of the machine parts being
broken out to show underlying parts.
Figure 5 is a fragmentary view of a portion of the machine parts being shown in
front elevation, and other parts being in section.
Similar letters of reference designate corresponding parts throughout the several
views of the drawing.
Before proceeding to a detailed description of the present invention it may be
stated that the machine generally speaking has a work supporting table and a knife
block carrier, which have relative movements towards and from each other to place
the material on the work support, in position to be acted upon by the skiving knife,
and also said knife carrier and work support have relative movements longitudinally
with relation to their length, in order to skive and bevel off the projecting edge of
the material; and while in the machine of the drawings which will be herein after
described in detail, the relative movements of the work support and knife carrier
towards and from each other, are produced by a movement of the work support
towards and from the knife block carrier, and the relative longitudinal movements
of the work support and knife block carrier are produced by a longitudinal
reciprocation of the knife block carrier with relation to the work support the present
invention is not limited thereto, as the relative movements described inay be
produced by moving the knife block carrier towards the work support, and the work
support may be moved longitudinally with relation to the knife carrier.
In the drawings A represents a suitable supporting frame which may be of any
convenient form and arrangement to support the working parts of the machine, said
frame in the machine of the drawing comprising a base a, upon the upper surface of
which are vertically projecting standards a¹, a² and a®.
In the standards a¹ and a² are suitable bearings a³ and at in which is mounted to
rotate a shaft B, said shaft being provided with a driving pulley b arranged to be
driven by a belt from any suitable source of power, the pulley b being loose on
said shaft, and having a bevelled inner face b¹, which is arranged to engage the
bevelled face 6 of a clutch pulley 6³, fixed to rotate with said shaft, the pulley b
being arranged to have a slight movement along the shaft B, whereby the bevelled
faces b and be of the pulleys b and bs are brought into contact, and motion imparted
to the shaft B from the constantly running pulley b, and when the bevelled faces are
disengaged, the shaft B will be at rest. Mounted in suitable bearings a formed in
a standard a upon the upper surface of the base a and extending parallel to the
shaft B is a shaft 13, said shaft B¹ being driven from the shaft B by means of a
pinion 6 fixedly secured to shaft B and gearing with a gear b³ fixedly secured
to the shaft B¹.
The front of the standard a¹ is formed with projecting portions or ribs a' and a³ which
are cut out or rabbetted as at a said rabbets a in connection with a plate ao,
secured to the projecting portion a' by bolts a¹¹, and a plate a secured to the
projecting portion a³, forming a guideway for the reciprocating knife block carriage C
which as will be hereinafter described is arranged to have a reciprocation along said
guideway.

page_text: The carriage C comprises a rectangular plate, the upper and lower edges of which
fit into guide ways in the front of the standard at and in the machine of the drawing,
said carriage is arranged to be reciprocated along said guide ways by a link c, which
is pivotted at c¹ to the back of said carriage, and which at its opposite end is pivotted
at to a crank pin c³, carried by a disc c fixed to the shaft B₁.
The above arrangement is such that a rotation of the main shaft B will rotate the
shaft B and through the link c impart a reciprocating movement to the carriage C.
Upon the front face of the carriage C is mounted a knife block D, said knife block
having secured to its under face suitable skiving knives d, and in order that said
skiving knives d may have their cutting edges presented at the proper cutting angle
to the stock to be skived, which will be upon the work support, said knife block in
the machine of the drawing, is fulerumed to oscillate upon the carriage C to lower
one knife and raise the other automatically, according to the direction of travel of
said carriage, and in the present invention, the oscillation of the knife block is
arranged to be automatically performed by the following mechanism.
The knife block D comprises a plate or casting which has a vertical or upright
portion d¹ and a horizontal portion d², the vertical portion d¹ being fulcrumed at d³
to the carriage C, and the horizontal portion carrying the skiving knives d, said
knives being secured in position on the under face of the horizontal portion ² of
the knife block D with their cutting edges d'arranged outwardly or at opposite ends
of the knife block, as clearly shown in Figure 5 of the drawing.
In the machine of the drawing, when the carriage C is moving in the direction of
the arrow shown in Figure 5 of the drawing, the knife block D will be in the position
shown in said figure with the right hand end depressed to bring the skiving knife at
that end in proper angular position to engage and skive the stock upon the work
support, and just as it completes its stroke in the direction indicated, the knife block
will be automatically oscillated and the opposite end depressed to bring the knife, on
the left in cutting position for action on the return stroke of the carriage C. Suitable
latches or locking devices are provided to hold the knife block in either of its
positions during the action of the cutters and these latches are arranged to be
automatically released as the carriage C reaches the limit of its stroke in either
direction.
The automatic oscillating and locking mechanism of the knife block D in the
machine of the drawing, comprises suitable plungers or rods ds, which are mounted to
slide in suitable bearings de, carried by the plate a¹0 said rods having heads or
enlargements d' upon their outer ends in order to limit their movement in one
direction, or towards each other. Said rods are surrounded by suitable coiled
springs which bear at one end against the inner surface of the end bearings do,
and at the other end against a shoulder formed upon said rods, whereby
the rods will be normally pressed towards each other or towards the medial line
of the machine.
l'pon the upper edge of the knife block D) is a projection d, which is arranged to
come into contact with the inner ends of the rods upon the reciprocation of the
carriage C and move said rods in their bearings against the tension of the springs;
it being understood that the projection * will engage the rod towards which it may
be moving.
After the projection * has engaged the end of the rod d³ towards which it may be
moving, the further movement of the carriage C and knife block D will cause the rod
to move backwardly in its bearings and the spring to be compressed, and just before
the carriage C reaches the limit of its stroke the rod then in contact with the
projection d will be exerting considerable pressure upon said projection, such pressure
being sufficient upon the unlocking or releasing of the knife block D to swing said
knife block upon its fulerum d³ to depress its opposite end, in which position it will
be locked for the return movement of the carriage C.
As shown in the drawings, the machine comprises spring bolts which are arranged
to automatically lock the knife block as it is oscillated, and suitable means are
provided for releasing the bolts, as the carriage C reaches the limit of its stroke in

page_text: either direction, in order to permit the knife block D to be oscillated and tilted
for the return stroke.
The locking and releasing mechanism of the machine of the drawing comprises
bolts E, which are arranged to have a sliding motion in suitable bearings e formed in
the knife block D suitable springs e¹ in said bearings acting upon the inner ends of
said bolts to normally press them outwardly; and the outer ends of said bolts E are
arranged to engage the curved faces of suitable blocks or keepers e³, carried by
plates e secured by bolts e to the ends of the carriage C, said keepers e³ being provided
below the curved faces e with notches e, with which the bolts E are arranged to
engage as the ends of the knife block D are depressed.
The keepers are slotted as shown at e, and projecting into and through
these slots are pins or projections es, formed on the ends of the bolts E, said
pins being arranged to be engaged by suitable stops or arms e, formed on
upwardly projecting arms el carried by the plate a, said stops e acting to force
the pins e inwardly against the tension of the springs e to thus remove the
bolts E from the notches e to release the knife block and permit the plunger ds, then
in contact with the projection d to swing the knife block D on its fulcrum, raising
one end and depressing the other end for the return movement of the carriage C.
It will thus be seen that the knives d are alternately raised and lowered to be
brought into operative engagement with the work, one knife cutting as the carriage
C moves in one direction, and the other knife cutting as the carriage moves in the
opposite direction.
In this connection I desire to state that in so far as my correspondent is at present
advised of the state of the art, it has never been proposed to provide a reciprocating
knife block or carrier with two cutters and means to automatically move said cutters
into and out of operation upon the reciprocation of said knife block, and while in
the illustrated embodiment of the invention I attain this result by an oscillating
knife block, I do not consider the invention as limited thereto, but intend to claim
the same in the broadest, legal sense.
As before stated, the knives are secured to the underside of the horizontal
portion of the knife block with their cutting edges arranged at opposite ends,
and in advance of the cutting edges are arranged suitable pressers to engage the
counter or other material to be skived in advance of the cutting edges, to press said
counter against the work support, and moving along with said cutters, smooth out
the material for the action of said cutters, and in the case of skiving counters where
said counter is laid upon a die faced cutting bed, into which said counter is pressed
and the portion of the counter projecting above the recess, skived off; the pressers
act to force said counter into the recess of the bed as the knife advances to skive off
the projecting portion of the counter.
The pressers in the machine of the drawings, are shown at F and comprise a
number of small bell crank levers f, which are fulcrumed upon rods f², said rods f
being supported by the vertical portion d', and by a plate secured by bolts p¹x to
the portion d of the knife block D. The lower ends of the bell crank levers f are
rounded as shown to engage the work and the upper ends of said levers rest
against a cushion fo, said cushion comprising a block of rubber or other suitable
material, arranged to permit the independent yielding of the levers f, whereby they
will be adapted to conform to the inequalities of the material being skived.
The cushions f are arranged in recesses formed in the brackets fa secured to the
knife block D by bolts f, and suitable adjusting screws are tapped into apertures
in the brackets arranged to bear upon the rear faces of said cushions, for the purpose
of adjusting the pressure of the same.
In order to adjust the position of the lower ends of the levers f with relation
to the cutting edges of the knives d, bars f³ are adjustably held in contact with the
inner faces of the upper ends of said levers, said bars f being acted upon by
suitable adjusting screws f, whereby said bars may be moved back and forth with
relation to the cushions to raise and lower the lower ends of the levers f.

page_text: The knives & in the present invention are held in position by an undercut rib g
formed along the back of the underside of the horizontal portion of the knife
block and by plates g, having undercut ribs g which are fastened to the front of
the portion d² of the knife block by the bolts 2x, the ribs g and g² engaging the side
edges of the knives & and holding them securely in position.
The work support H in the machine of the drawing comprises a substantially
rectangular table h, which is arranged for a vertical movement towards and from the
knives d, said table having a removable die plate ¹ upon its upper surface in which
is formed a recess or die into which the counter to be skived is depressed, leaving
portions of the edge projecting to be cut off by the skiving knives d, said die
plate h¹ being cut away at its central portion as shown at h³ for a purpose to be
hereinafter described.
The table H is provided with a depending shank or stem h' which is arranged to
have a vertical reciprocation to elevate and lower the table H in a guide h³ formed in
a projection h on the front of the base a, and said shank or stem his retained in said
guide by a plate secured to the front of said projection by screws h³.
The table H is raised by a cam h which engages a cam roll 10, mounted upon the
rear face of the shank h', said cam roll being preferably mounted in an eccentric
stud and which has a threaded portion around its periphery which is engaged by
a screw, whereby said stud may be turned to adjust the vertical throw of the table
or work support H.
The cam is carried by a rock shaft K, which is mounted in suitable bearings in
the base a, and in a bearing in a short standard ¹ said shaft carrying a belt
pulley which is connected by a belt with a pulley on the shaft B.
The shaft K is a rock shaft arranged to be turned sufficiently to cause the cam to
raise the table or work support 1, and to be turned in the opposite direction to reverse
the cam and permit the shank and table H to fall by gravity, by means of a spring,
which is connected at its upper end to a fixed bar ko and at its lower end to a lug k³,
carried by a collar ks fixedly secured to the shaft K. The clamp for clamping the
counter in position upon the die plate h¹ of the work support H is arranged to
automatically clamp the counter upon the elevation of the work support and to
release said counter upon the depression of said work support.
The clamp in the machine of the drawings comprises a yoke M, arranged as shown
to cross the bed or work support II the legs m of the yoke passing through
bearings m¹, on a fixed portion of the machine and surrounded below said bearings
with coiled springs m², said springs m³ being confined between the lower ends of said
bearings and suitable heads m³ formed on the legs m, the cross bar m' of the yoke M
being arranged to draw the central portion of the counter down into the cut out
portion of the die plate h¹, and against a stationary clamping plate m³, secured in a
groove m in the bed or table H, the upper surface of said clamping plate and the
under surface of the cross har m, being roughened or serrated in order to frictionally
grip the counter.
The above arrangement is such that as the table or work support H rises, the counter
will come in contact with the cross bar mt of the clamp M just before the table has
reached the limit of its upward movement, and in the further upward movement of
said work support, the clamp will draw the central portion of the counter down
into the recess h³ in contact with the plate m³, the springs m² yielding in the further
upward movement of the work support, thus yieldingly, but firmly clamping the
counter in position to be acted upon by the knives d, and upon the lowering of the
table or work support H, the counter will be automatically released as will be clearly
apparent from an inspection of the drawings.
In the present invention, the mechanism which actuates the knife carriage and
the mechanism which acts to raise the work support, are controlled by suitable
clutches and connecting mechanisin, so arranged that a downward depression of a
foot treadle (not shown) will cause the rock shaft K to be turned to raise the work
support H, and bold said support raised, with the material to be skived clamped
thereon in position to be acted upon by the skiving knives, and to thereafter rotate

page_text: shaft B to impart motion to shaft B¹, to cause a reciprocation of the knife carriage C
and to automatically stop after one excursion of the knife carriage, leaving said
carriage in its starting position and the work support lowered.
In the machine of the drawings, this mechanism is so arranged that motion being
imparted to the shaft K to raise the work support, said shaft through connecting
mechanism acts to connect the constantly running pulley 6 with shaft B to thus
impart a rotation to such shaft and shaft B¹ to reciprocate the knife carriage C.
To secure the above suggested result in the machine of the drawings, the
pulley is loosely mounted upon the shaft K, and free to turn thereon, and said
pulley is constantly driven by the belt from pulley *, which is connected to
and driven by the pulley b. The pulley k is arranged to be locked to the shaft K
by a suitable clutch mechanism, comprising a friction surface carried by an element
fixed on said shaft, and a friction surface carried by a part movable along the shaft K,
towards and away from the fixed element. As shown, the fixed friction surface may
be formed on a pulley p which is secured to the shaft K, and the inovable friction
surface may be formed on the pulley ², said pulley being moved towards and away
from the pulley p by a fork pl, which takes into a groove p² carried by a hub pa
formed on the pulley ². The fork p¹ is formed on one arm of a bell crank lever pt,
which is fulcrumed at p³ to the frame a, and the opposite end of said bell crank
lever is connected by means of a link or rod p to a foot treadle (not shown).
Upon shaft K is placed a collar p from one face of which projects a pin p³, which
is arranged to engage the hooked end p³ of a rod p10 when the shaft K is rocked,
which rod controls the clutch mechanism, which connects the pulley b and shaft B,
as will now be described.
The pulley b is moved towards and from the pulley 63 by a lever t, which is
fulcrumed at t to the standard a², and which at the upper end is provided with a
collar which engages a groove t³, formed in a hub of the pulley k+, which is fixed
to the pulley b, and said pulleys are moved in one direction to bring the clutch
faces b¹ and be into frictional engagement, by means of a spring 15, which at one end
is connected to the lower end of the lever t and at the other end to the standard a²,
preferably by means of an adjusting bolt to.
The lever is moved against the tension of spring t to move pulley away from
the pulley ³, to disconnect the clutch faces 61 and 62 by the following
mechanism :
A link is pivotally connected at u' to the lower end of the lever t, and at its
opposite end said link is pivotally connected at u² to a link u³ said link being
pivotted at u to the top of base a.
A lateral movement of the link u³ about its pivot u towards the left in Fig. 4,
will exert a forward pull upon the link uthus moving the levert against the tension
of spring to disconnect the clutch faces b' and 62, and a lateral movement of the
link u³ in the opposite direction, or towards the right will permit the link t to be
drawn back by the spring, thus moving the pulley b towards the pulley b³ to
bring the clutch faces 61 and 12 in contact, as will be clear from an inspection of
Figs. 2 and 4. The lateral movement of the link us is imparted by the shaft w
which shaft is mounted to have a longitudinal sliding movement and a rocking
movement in the bearings w¹ and said shaft w has a fixed grooved collar w³ (see
dotted lines Fig. 4) which collar engages a roller u³ mounted upon the pivot u of
the links and u³.
The shaft w is moved longitudinally in one direction by a spring w³ which is coiled
upon said shaft, one end of such spring bearing against the bearing w¹ at the left of
the machine as shown in Figure 4 and the other end of said spring bearing against
the grooved collar w². The shaft wis moved in the opposite direction against the
tension of spring w³ by a lug w, which is fixed to the rear face of the gear 65 and
which is arranged to engage a lug w³, carried by a collar wo, fixed to the left hand and
of the shaft w.
When the lug w engages the lug w and moves the shaft w laterally to the left as
shown in Figure 4, it causes said shaft by means of the grooved collar 20º to swing

page_text: the forward end of the link u³ to the left, thus pulling forward upon the link u and
disconnects the clutch faces b¹ and 62, this stopping the rotation of shaft B and the
movements of the knife carriage C, and said parts will remain at rest so long as the
lug w is held by the lug w.
A rocking of the shaft w in its bearings will move the lug w away from the rear
face of the gear b', and disengage the same from the lug w, thus permitting the
spring w³ to move the shaft to the right, which swings the end of the link us to the
right and permits the spring t5 to draw back the lower end of the lever t and throw
the clutch faces 61 and 62 into contact to start the rotation of the shaft B, and the
movement of the knife carriage C. It is designed that as soon as the shaft w has
been rocked to remove the lug w from engagement with the lug w' and moved to
the right by the spring w³, as described to start the shaft B, that said shaft w will
be instantly returned to its former position in order to place the lug w in position to
he engaged by the lug was said lug w comes around to the stopping position, to
stop the rotation of the shaft B.
To secure the above suggested result and also to provide for a stopping of the
reciprocation of the knife block carriage C, independently of the backward rocking of
the shaft K and the lowering of the work support H, the connection between the link
10 and the shaft w is a loose connection arranged to be automatically disconnected
when the shaft wis moved laterally by the spring w³, and connected when the
shaft w is pulled laterally by the lug wt.
This connection comprises a collar w' which is loosely mounted upon the shaft w,
and through which the shaft is free to move. The collar to' has a projecting arm w
to the outer end of which the rod p10 is pivottally secured, and said collar is arranged
to be rocked in one direction by a downward pull on said rod, and to be returned by
a spring, which is connected at one end to said collar, and at the other end to a
fixed portion of the frame.
Fixed to the outer or right hand end of the shaft wis a head w¹º in which is
formed a suitable bearing w¹¹, receiving a stud or pin w¹², which is arranged to have
a free sliding movement therein, and which is normally projected as shown in Fig. 4
of the drawing, by means of a spring 1013 which is located in the bearing w", and
which acts upon the inner end of said stud.
The stud w is arranged to engage an aperture w¹ formed in a lug 2015, projecting
from the collar 107 when the shaft w is moved laterally towards the left in Fig. 4, so
that the collar we will be locked to the shaft w to rock said shaft when the rod po is
drawn down to remove the lug w from contact with the lug wt. A movement of the
shaft w to the right under the action of the spring w³, will remove the stud w¼ from the
aperture w, thus disconnecting the shaft we from the collar w, when said shaft will
be immediately returned to the position shown in Figure 4, by a spring we which at
one end is connected to the collar on said shaft, and at its other end to a fixed part
of the frame.
By the above arrangement, the shaft w may be returned to the position shown in
Figure 4 to place its lug w in position to be engaged by the lug w, before the rod pl
is released by the rocking of the shaft K, so that work support may be held
in its raised position until the knife block carriage has been made a complete
reciprocation.
When the shaft w is moved to the left by the lug w, engaging the lug w³, the
inner face of the head 2010 will be brought close to the outer face of the collar w', the
stud w being forced into its bearing against the tension of the spring w¹³, and as
the collar w' is rotated backward by the release of the rod p10 as the shaft K is rocked
to lower the work support, the stud w12 will be forced into the aperture w¼, as said
aperture comes opposite the said stud, whereby the shaft w and the collar w' will be
locked together, and said shaft will be rocked upon a downward pull of the rod p¹º.
In order to properly position the counter to be skived upon the work support H, I
have provided suitable guides or gauges arranged to contact with the edge of the
counter, and have arranged such guides or gauges in such manner, that when the
work support H is lowered, the guides or gauges will project above the upper surface

page_text: of the work support, and when said work support is raised said guides or gauges will
be below the surface of the work support so as to be out of the way of the reciprocating
skiving knives.
The guides or gauges in the machine of the drawings comprise suitable vertically
extending pins or rods .c which rods at their lover ends are adjustably connected to
suitable brackets or arms el fixed to the base a said rods a passing through bearings .22
in the work support H. The rods are adjusted to bring their upper ends in such a
position that when the work support H is lowered, said rods will project above the
surface thereof as clearly shown in Figure 1, but when said work support is raised to
bring the counter thereon in position to be acted upon by the skiving knives, the
ends of said rods will fall below the surface of the work support, and be out of the way
of the reciprocating knives.
In the operation of the machine of the drawings, the counter is placed upon the
upper surface of the work support, and properly positioned by means of the rods x,
the depression of the treadle (not shown) causes the rod p to actuate the bell crank
lever p, causing the fork pl to move the pulley towards the disc p thus locking
the pulley to the shaft K and rocking the shaft K to cause the can h³ to raise the
work support towards the reciprocating knife carriage, the vertical movement of the
work support causing the clamp M to clamp the central portion of the counter, and
hold it fixedly in position on the work support as hereinafter described.
The rocking of the shaft K has caused the pin 8 to engage the hooked end of the
rod plo, drawing down said rod and through the collar w, rocking the shaft w to
remove the lug w from contact with the lug w, this permitting the spring w³ to
move the shaft to to the right and disconnecting said shaft from the collar, and
causing the collar w² on said shaft to move link to laterally to the right as shown in
Figure 4, and permitting spring to rock the levert to move the pulley b toward
the pulley 68 to bring the clutch faces b¹ and 62 in contact to impart a rotary motion
to said shaft B. The rotation of shaft B will by means of the gear 6 and 65 impart
a rotation to shaft B¹, and through the link c, reciprocate the knife block carriage C,
as before explained.
The knife block 1 in Figure 1 is shown in a horizontal position, being a position
of inactivity intermediate between the extreme oscillations of said knife block D. In
Figure 5, however the knife block D is shown in position in which it works on a
lateral reciprocation towards the right. In this position, the knife d at the right
hand end of the knife block D, as said knife block is moved towards the right, will
engage the portions of the counter projecting above the die plate and skive off
and remove said portions.
As the knife block carriage C reaches the limit of its stroke towards the right,
the lug or projection d on the knife block 1) engages the spring plunger 5, and
upon its continued movement towards the right, moves said plunger thus compressing
its spring, and as the finger es of the bolt E comes in contact with the arm e³, said
bolt will be forced back against the tension of the spring e, and its end removed from
the notch e, thus permitting the plunger d to oscillate or rock the knife block D on
its pivot, raising the right hand end of said knife block and lowering the left hand
end, the bolt on the lowered end locking said knife block for its return stroke, and
as the said knife block returns, the knife d on the left hand end of the knife block
will skive off the projecting portions at the left hand end of the counter, and as the
knife block carriage C reaches the limit of its stroke to the left, the bolt E on the
left will be released in a manner before described, permitting the plunger at the left
hand end of the machine to oscillate the knife block, and set it in position shown in
Figure 5, for another cycle of operation.
As soon as the shaft w was released from the collar w7, the spring we returne.l
said shaft to the position shown in Figure 4, placing the lug w³ on said shaft in the
position to be engaged by the lug w' on the rear gear 6, and as the lug w engages
the lug w the rotation of the gear 6, will cause the shaft w to be inoved laterally
to the left, against the tension of the spring w³, thus moving the link us to
the left, and by means of the connecting rod u draw forward the lower end of the

page_text: lever t, causing said lever to move back the pulley b along the shaft B,
disconnecting the clutch faces 61 and 6, and stopping the rotation of the shafts B
and B and the reciprocation of the carriage C, whereupon the operator removes
his foot from the treadle, thus disconnecting the pulley ² from the shaft K and
permitting the spring to rock said shaft backwardly to lower the work
support, and also permitting the spring w to turn the collar w in position to
bring the aperture w in line with the stud 2012, whereupon the stud w12 will
engage the aperture 2014, and lock shaft w to the collar w to be again actuated
as herein before described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what ma
L
1. In a skiving machine, the combination with a reciprocating carrier and knives
thereon arranged for alternate independent operation, of means controlled by the
reciprocations of the carrier to alternately move said knives into and out of operative
position during each reciprocation of said carrier to skive opposite ends of the
material from the medial portion thereof towards each end, substantially as described.
2. In a skiving machine, the combination with a reciprocating carrier, of an
oscillating knife block mounted thereon, knives mounted on the knife block at each
end thereof, and means to oscillate said knife block upon the reciprocation of the
carrier to alternately place the knives in position to skive opposite ends of the
material from the medial portion thereof towards each end, substantially as described.
3. In a skiving machine, the combination with a reciprocating carrier, of knives
thereon arranged for independent operation to skive opposite ends of the material
from the medial portion thereof towards each end, means controlled by the recipro-
cations of said carrier to alternately move one knife into operative position and to
move the other knife out of operative position, and locking devices to lock said
knives in and out of operative position, substantially as described.
4. In a skiving machine, the combination with a reciprocating carrier, of an
oscillating knife block mounted thereon carrying a knife at each end thereof,
means controlled by the reciprocations of said carrier to oscillate said knife block
to alternately place the knives in position to skive opposite ends of the material
from the medial portion thereof towards each end, and locking devices arranged to
hold said knife block in its different positions, substantially as described.
5. In a skiving machine, the combination with a reciprocating carrier, of an
oscillating knife block mounted thereon, knives at opposite ends of said knife block,
means to oscillate said knife block to raise one knife and lower the other as said
carrier is reciprocated to place said knives alternately in position to skive opposite
ends of the material from the medial portion thereof towards each end, and locking
devices also controlled by the reciprocations of said carrier to release the knife block
as the carrier reaches the end of its stroke in either direction to permit the
oscillation of said knife block, substantially as described.
6. In a skiving machine, the combination with a horizontally reciprocating
carrier, carrying a suitable skiving knife, of a work support arranged to support the
material to be skived, means to impart relative movements to the carrier and work
support to place the work in position to be acted upon by the knife, and means
controlled by such relative movements of the knife carrier and work support to
impart relative reciprocations to the carrier and work support to cause the knife to
operate upon the material, substantially as described.
7. In a skiving machine, the combination with a reciprocating carrier, of an
oscillating knife block mounted thereon, and knives mounted on said knife block for
independent alternate action, means to oscillate said knife block to raise one end
and lower the other as said carrier is reciprocated to alternately place said knives
into position to skive opposite ends of the material from the medial portion towards

page_text: each end, said means being normally inactive and brought into action by the move-
ment of the carrier, substantially as described.
8. In a skiving machine, the combination with a movable work support, of a yoke
shape work clamp arranged to engage and clamp the medial portion of the material
upon the upward movement of the work support, and to release said material upon
the downward movement of the work support, substantially as described.
9. In a skiving machine, the combination with a reciprocating carrier carrying a
skiving knife, of a work support inovable towards and from the plane of reciprocation
of the carrier, and connected mechanisms timed and arranged to cause a reciprocation
of the carrier after the work support has brought the work into position to be acted
upon by the knife, and to lower the work support after such reciprocation of the
carrier, substantially as described.
10. In a skiving machine, the combination with a reciprocating knife carrier, of a
work support movable towards and from the knife carrier, a cam shaft to raise the
work support, a shaft and connecting devices to actuate the knife carrier and suitable
clutches and controlling devices to cause the knife carrier actuating shaft to be set
in rotation by the rocking of the cam shaft to raise the work support, substantially as
described.
11. In a counter skiving machine, the combination with a work support, of skiving
knives arranged to skive a counter placed on said work support, and means to actuate
said skiving knives to cause said knives to alternately make skiving cuts from
the medial portion of the counter towards each end thereof, substantially as
described.
12. In a skiving machine, the combination with a work support, of a skiving knife,
means to move the work support towards and from the skiving knife and a suitable
work gage mounted on a fixed support and arranged to position the work upon the
work support, said gage arranged to be projected above the face of the work support
as said work support moves away from the skiving knife, and to be retracted below
the work support as said work support moves towards the skiving knife, substantially
as described.