Safety-Razor-Blade Sharpener. Page: 2 of 3
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UiTE i)STATES PATENT O CE
PETER D. HAUSER, OF SAN ANTONIO, TEXAS.
SAFETY-RAZOR-BLAI)E SHARPENER.Specification of Letters Patent.
Patented May 8, 191'.
Application filed August 10, 1916. Serial No. 114,192.
To all whom it may concern:
Be it known that I, PETER D. HAUSER, a
citizen of the United States, and resident
of San Antonio, in the county of Bexar and
5 State of Texas, have invented certain new
and useful Improvements in Safety-Razor-
Blade Sharpeners, of which the following is
a specification..
The present invention relates to the art
10 of grinding and polishing and has partic-
ular reference to new and useful improve-
ments in safety razor blade sharpening
machines.
The primary object of my invention is to
15 provide a machine of the class described
having a novel and improved arrangement
of metal grinding elements, said elements
revolving simultaneously adjacent each
other for sharpening objects engaged there-
20 with.
Another object of my invention is to pro-
vide a machine of the class described having
a novel holder for blades of various types-
for bringing the blade into contact auto-
25 matically alternately with each one of the
grinding elements, and thereby to act upon.
both sides of the blade to produce a keen
cutting edge.
A further object of my invention is to
30 provide in combination with a plurality of
grinding elements means for bringing a
blade to be sharpened alternately into en-
gagement with said elements, said means
being. yieldable, that is, the blade being
35 yieldabiy engaged with the grinding sur
face. '
A still further object of my invention is
to provide in combination with grinding
elements a holder for an object to be ground
tO which is adapted to firmly grasp the object
to be ground and removably placed in the
machine, said holder being readily inserted
and removed from operative position while
the machine.is running or when the same is
45 stationary.
Other objects and advantages to be de-
rived from the use of my improved sharpen-
ing machine will appear from the following
detailed description and the claims, taken
50 with an inspection of the accompanying
drawing, in which:
Figure 1 is a top -plan view of a sharpen-
ing machine embodying the improvements
of my.invention;
55 Fig. 2 is a vertical longitudinal sectional
view of the same; andFig. 3 is an enlarged detailed perspective
view of the blade holder.
Referring more particularly to the draw-
ing, wherein similar characters of eference cc
designate like and correspond- . parts
throughout the various views, 1 designates
in its entirety a housing for my improved
sharpening mechanism, said housing pref-
erably being rectangular and having a base 65
portion 2, side walls 3 and end walls 4.. An
extension 5 is formed on the body 1 for con-
necting the body to a table or any other sta-
tionary object.
The grinding elements of my invention 70
include rollers 6 and 7 arranged in parallel
spaced relation and carried by shafts 8 and
9,, said shafts having bearings 10 and 11 in
the side walls 3 of the housing 1. The roll-
ers 6 and 7 are provided with abrasive sur- 75
faces 12 and 13 for performing the sharpen-
ing process. The rollers 6 and 7 are pro-
vided with gears 14 and 15 at adjacent ends,
said gears being in- intermeshing engage-
ment, so that movement of one of the rollers 80
is attended by simultaneous movement of the
other roller. A pawl 16 pivoted at 17 on
one of the side walls 3 engages the gear 14
to prevent reverse rotation of the rollers.
Motion is imparted to the roller 7 and 85
thence to the roller 6 by means of a shaft 18
having a gear 19 mounted thereon and rota-
table therewith, said gear 19 being in mesh-
ing engagement with the gear. 15 as best
shown in Fig. 2. A roller 20 is mounted 90
upon the shaft 18 and rotatable therewith,
said roller having an abrasive covering 21
for sharpening knives and ordinary razor
blades. An emery wheel 22 is mounted on
the free end of the shaft 18 for a1- obvious 95
purpose. A crank 23 is mounted on the op-
posite end of the shaft 18 for imparting
motion thereto.
The work holder is designated -24 and is
preferably formed of a sheet of metal bent 100
at 25 and having a rod 26 extending there-
through, said rod forming bearings for re-
ception in recesses 27 formed in the upper
marginal edges of the side walls 3 of the
housing 1.. The rod 26 is welded or other- 105
wise permanently connected with .the work
holder 24. The work holder, as bent, is
formed with gripping jaws 28, said gripping
jaws being inherently resilient and main-
tained in gripping engagement with an ob- .110
ject by means of a screw 29 extending there-
through, said screw having a wing nut or1,224,924..
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Hauser, Peter D. Safety-Razor-Blade Sharpener., patent, May 8, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858687/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.