Machine for Sharpening Cutlery. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
JOSEPH W. HUNTER, OF GARRETT,. TEXAS.
MACHINE FOR SHARPENING CUTLERY.Specification of Letters Patent.
Patented Nov. 7, 1911.
Application filed January 27, 1911. Serial No, 604,957.
To all whom. it may concern:
Be it known that I, JOSEPH W. HUNTER,
citizen of the United States, residing at
Garrett, in the county of Ellis and State of
: Texas, have invented certain new and useful
Improvements in Machines foi Sharpening
Cutlery, of which the following is a speci-
fication.
This invention pertains to machines for
10 sharpening cutlery.
The object of the invention is to provide
a machine in which the article to be sharp-
ened is clamped in a movable carrier in
position to be reciprocated between abrading
15 members; also provision for reciprocating
the carrier ; provision for limiting the move-
ment of the carrier ; and provision for yield-
ably holding the abrading members in en-
gagement with the article.
20 A still further object of the invention is
to provide means of the character described
that will be strong, durable, efficient, and
easy of operation, simple and comparatively
inexpensive to construct, and also in which
25 the several parts will not be likely to get
out of working order.
With the above and other objects in view,
the invention has relation to certain novel
features of construction and operation, an
30 example of which is described in this speci-
fication and illustrated in the accompanying
drawings, wherein:
Figure 1. is a plan view, portions of the
base plate being broken away, Fig. 2. is a
35 side elevation of the same, Fig. 3. is an end
elevation, one of the stops being broken
away and the roller guide being shown
partially in section, and Fig. 4. is a detail
in elevation of the clamp.
40 In the drawings the numeral 1 designates
an elongated base plate which is shown with
portions broken out for convenience of illus-
tration. At one side of the central portion
of the base plate a clamp arm 2 depends and
45 projects under the plate. This clamp arm
carries a vertical thumb-screw 3 by which
the base plate is fastened in position after
the clamp arm has been engaged over the
edge of a table or other support..
50 From opposite sides of the base plate and
at the central portion vertical frame plates
4 extend upward. On each frame plate a
short distance above the base plate a pair of
longitudinal and parallel ribs 5 project up-
55 ward. Each pair or ribs is spaced apart
and forms a slideway. A carrier 6 in theform of a horizontal plate has its longitudi-
nal edges engaging in the slideways. This
plate is considerably less in length than the
base plate but is slightly longer than the 60
blade of the knife or other article to be
sharpened.
A transverse plate 7 is supported at the
upper ends of the plates 4, while a trans-
verse guide plate 8 extends between the 65
uppermost ribs 5 a short distance above the
carrier 6. Vertical shafts 9 extend between
the plates 7 and 8 on opposite sides of the
longitudinal center of the machine and out
of transverse alinement. Just below the plate 70
7 each shaft includes a universal joint 10.
On each shaft below the universal joint
an inverted truncated abrading roller 11 is
fastened. These rollers are of suitable ma-
terial and are disposed by 'reason of their 75
shafts, one in advance of the other and with
their adjacent upper ends projecting past
each other on opposite sides of the longi-
tudinal center of the machine. For yield-
ably forcing the rollers toward each other 80
extension springs 12 have their outer ends
suitably supported by the plates 4 and their
inner ends encircling horizontal pins 14 ex-
tending from collars 15 loosely confined on
the reduced ends of the shafts 9 between the 85
rollers and the plate 8. The lower ends
of the shafts extend into transverse slots
16 of the plate 8 whereby the rollers may
swing transversely but not longitudinally of
the machine. At one end of the carrier 6 go
a vertical clamp yoke 17 is secured. As
shown in Fig. 4 a block 18 having a V-
shaped recess at its upper end is fixed in the
lower end of the yoke on the carrier plate.
A corresponding block 19 having a V-shaped 95
recess in its underside is slidable vertically
in the yoke and is adjusted and fastened by
means of a thumb-screw 20 passing through
the upper end of the yoke. The handle of
a knife 21 or other instrument to be sharp- 100
ened is inserted between the blocks and fas-
tened in position so that its blade will ex-
tend longitudinally of the machine with its
cutting edge upward and engaging between
the rollers 11. 105
It is obvious that by reciprocating the car-
rier 6 the knife blade will be reciprocated,
between the rollers and by reason of the
springs 12 said rollers will adapt themselves
to blades of varying thickness and will also 110
be held in yieldable contact therewith. By
arranging one roller in advance of the other1.,007,951.
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Hunter, Joseph W. Machine for Sharpening Cutlery., patent, November 7, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511063/m1/2/?q=%22%22~1: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.