Improvements in Leather-skiving Machines.
Year: 1889

page_text: Date of Application, 13th Sept., 1889
Complete Specification Left, 27th Feb., 1890-Accepted, 29th Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in Leather-skiving Machines.
I, ORLANDO ETHELBERT LEWIS, of 98, Lincoln Street, Boston, in the County of
Suffolk, and State of Massachusetts, one of the United States of America.
Manufacturer, do hereby declare the nature of this invention to be as follows:—
This invention has for its object to improve the construction of leather skiving
machines employing a rotary skiving knife, and has especial reference to grinding
devices for said knife.
My invention consists in a leather skiving machine. the combination with a
revoluble circular cutter and a grinder movable or adjustable simultaneously with
the cutter: also in a leather skiving machine, the combination with a circular cutter
and frame or arm carrying it, of a grinder and a frame or arm carrying it, and a
connecting bolt or stud for connecting the said frames or arms, whereby simultaneous
movement is effected; also in a leather skiving machine, the combination with the
circular cutter, and means for revolving it, of a grinding dise or discs formed to
present an annular groove to receive an edge of the cutter, and à revoluble shaft
carrying said grinding disc or dises; also in a skiving machine, the revolving cutter.
and grinding disc or discs formed to present an annular groove to receive the edge of
the cutter, combined with a revoluble shaft carrying the grinding disc or dises, and
the pivoted arm supporting said shaft: also in al leather skiving machine, the
revolving cutter, and grinding disc or discs carried by the revoluble shaft, and means
as will be described for vertically adjusting said shaft; also in a leather skiving
machine, the pivoted frames carrying the cutter and grinder, and a groove connecting
bolt or stud upon which both the said frames rock, combined with the pointed or
tilting washer, having a pin to enter said grooves; also in a leather skiving machine,
the combination of a feed wheel, shaft and helt pulley therefor, a feed wheel, shaft
and belt pulley therefor, a cutter shaft, and belt pulley therefor, as will be hereinafter
described.
A feed roll is secured to a shaft having its bearings in the main frame-work of the
machine, a feed disc is secured to another shaft having its bearings in the bracket or
arms of the frame-work, the revolving cutter is secured to a shaft having its bearings
in a frame, the guide and presser are all as described in the class of machines herein
to be referred to.
A pulley is secured to the shaft by which it is revolved: another pulley is secured
to another shaft by which it is revolved and another pulley is secured to another
shaft by which it is revolved, said pulleys being connected by independent belts to a
counter shaft, to thereby simplify the machine as much as possible.
The grinding mechanism, as herein described, consists of two abrasive dises, one of
which has a feathered or chamfered edge to thereby present an annular groove or race
for the cutter, although in lieu thereof it is obvious that a single abrasive disc may be
formed with an annular groove.
The discs are secured to a shaft having its bearings in a frame secured to a holt or
stud passing through a slot in the arm or frame of the machine to which bolt or stud
the frame or arm carrying the cutter is secured.
The bolt or stud bearing both frames has on it a washer having a pointed bearing
face formed by a slabbing off or chamfering at each side, such pointed face permitting
the washer to rock as the frames are moved.
The washer has a pin which enters a groove in the bolt or stud which serves to
maintain the position of the washer.
By this construction, it will be seen that the grinding disc or discs and the knife are
simultaneously adjustable,

page_text: As it is desirable to have the grinding discs act sometimes upon one and sometimes
upon the other side of the cutter, it is herein described as vertically adjustable for this
purpose.
The means for accomplishing such vertical adjustment consists of a screw turning
in an arm or bracket, said screw passing through a block which embraces the shaft to
which the discs are secured between the flanges thereof, so that by turning the screw
by means of a hand wheel, the said block will be raised and lowered.
Another pulley is secured to the shaft to which the discs are secured, by which it is
revolved.
Dated the 13th day of Sentember 1880
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Leather-skiving Machines.
I, ORLANDO ETHELBERT LEWIS, of 98, Lincoln Street, Boston, in the County of
Suffolk, and State of Massachusetts one of the United States of America, Manufacturer,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to he particularly described and ascertained in and by the following
statement:
This invention has for its object to improve the construction of leather skiving
machines employing a rotary skiving knife, and has especial reference to grinding
devices for said knife.
My invention consists in a leather skiving machine, the combination with a revoluble
circular cutter and a grinder movable or adustable simultaneously with the cutter;
also in a leather skiving machine, the combination with a circular cutter and frame
or arm carrying it, of a grinder and a frame or arm carrying it, and a connecting bolt
or stud for connecting the said frames or arms, whereby simultaneous movement is
⚫ effected;
also in a leather skiving machine, the combination with the circular cutter,
and means for revolving it, of a grinding disk or disks formed to present an annular
groove to receive an edge of the cutter, and a revoluble shaft carrying said grinding
disk or disks; also in a skiving machine, the revolving cutter, and grinding disk or
disks formed to present an annular groove to receive the edge of the cutter, combined
with a revoluble shaft carrying the grinding disk or disks, and the pivoted arm
supporting said shaft; also in a leather skiving machine, the revolving cutter, and
grinding disk or disks carried by the revoluble shaft, and means as will be described
for verticallyadjusting said shaft; also in a leather skiving machine, the pivoted frames
carrying the cutter and grinder, and a groove connecting bolt or stud upon which
both the said frames rock, combined with the pointed or tilting washer, having a pin
to enter said groove; also in a leather skiving machine, the combination of a feed
wheel, shaft and belt pulley therefor, a feed wheel, shaft and belt pulley therefor, a
cutter shaft, and belt pulley therefor, as will be hereinafter described.
Fig. 1 shows in side elevation a leather skiving machine embodying this
invention,
Fig. 2, a front elevation of the machine shewn in Fig. 1.
Fig. 3, a detail of a grinding device to be referred to, and
Figs. 4 & 5, sectional details to be referred to.
The feed roll A secured to the shaft a having its bearings in the main frame-work D
of the machine, the feed disk B secured to the shaft having its bearings in the
bracket or arms b¹ of the frame-work, the revolving cutter C secured to the shaft c
having its bearings in the frame c', the guide E and presser N, are all as shown in
the class of machines herein to be referred to.
A pulley a' is secured to the shaft a by which it is revolved; a pulley is secured
to the shaft by which it is revolved; and a pulley is secured to the shaft by
which it is revolved, said pulleys being connected by..independent belts to a counter
shaft, to thereby simplify the machine as much as possible.

page_text: The grinding mechanism, as herein shown, consists of two abrasive disks e, e¹, one
of which has a feathered or chamfered edge to thereby present an annular groove or
race for the cutter C. although in lieu thereof it is obvious that a single abrasive
'disk may be formed with an annular groove.
The disks e, el are secured to a shaft having its bearings in a frame e³ secured
to a bolt or stud et passing through a slot in the arm or frame of the machine, to which
bolt or stud the frame or arm & carrying the cutter is secured.
The bolt or stud et bearing both frames has on it a washer having a pointed
bearing face formed by slabbing off or chamfering at each side, see Fig. 4, such pointed
face permitting the washer to rock as the frames are moved.
The washer has a pin 2 which enters a groove in the bolt or stud which serves to
maintain the position of the washer.
By this construction, it will be seen that the grinding disk or disks and the knife
are simultaneously adjustable.
As it is desirable to have the grinding disks act sometimes upon one and sometimes
upon the other side of the cutter C, it is herein shown as vertically adjustable for this
purpose.
The means shown for accomplishing such vertical adjustment consists of a screw e
turning in the arm or bracket ³, said screw passing through a block e which embraces
the shaft between the flanges thereof, so that by turning the screw e³ by means
of the hand wheel es, the said block of will be raised and lowered.
The pulley is secured to the shaft by which it is revolved.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1: In a leather skiving machine a revoluble circular cutter, and a grinder for it.
combined with a frame bearing both the cutter and grinder that they may be moved
or adjusted, simultaneously substantially as described.
2: In a leather skiving machine a circularscutter and frame or arm carrying it, a
grinder, and a frame or arm carrying it, and a connecting bolt or stud for con-
necting the said frames or arms, whereby simultaneous movement of the cutter and
grinder is effected horizontally and vertically, substantially as described.
3-In a leather skiving machine, the combination with the circular cutter C, and
means for revolving it, of the grinding disk or disks formed to present an annular
groove to receive the edge of the cutter C, and the revoluble shaft carrying said
grinding disk or disks, substantially as described.
4-In a leather skiving machine, the revolving cutter C, and grinding disk or
disks, one of which has a chamfered edge to receive the edge of the cutter C,
combined with a revoluble shaft carrying the grinding disk or disks, and the pivoted
arm supporting said shaft, substantially as described.
5: In a leather skiving machine, the grinding disks carried by a revoluble shaft,
the revolving cutter C intermediate said disks, and means substantially as described
for vertically adjusting said shaft to present one or the other of the surfaces of the
cutter to the disks, substantially as and for the purpose set forth.
6: In a leather skiving machine, the pivoted frames carrying the cutter and
grinder, and the grooved connecting bolt or stud upon which both the said frames
ock, combined with the pointed or tilting washer having a pin to enter said groove,
ubstantially as described.
7-In a leather skiving machine, the combination of the feed wheel A, its shaft a,
nd belt pulley a¹ thereon, the feed wheel B, its shaft b, and belt pulley 73 thereon,
he cutter C, shaft c, and belt pulley ², substantially as described.
Dated the 27th day of February 1890.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents.