Engraver's Tool Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE
EDUARD FREDRICK MUELLER, OF CALDWELL, TEXAS, ASSIGNOR OF ONE-HALF TO
F. H. HITCHCOCK, OF CALDWELL, TEXAS.
ENGRAVER'S TOOL.
989,794. Specification of Letters Patent. Patented Apr. t1, 1911.
Application filed July 5, 1910. Serial No. 570,338.To all whom it may concern:
Be it known that I, EDUARD FREDRICK
MUELLER, citizen of the United States, re-
siding at Caldwell, in the county of Burleson
5 and State of Texas, have invented certain
new and useful Improvements in Engravers'
Tools, of which the following is a specifi-
cation.
My invention relates to new and useful
10 improvements in engravers' tools and is
more particularly designed to assist in hold-
ing small articles to be engraved.
The object of my invention is to provide
a device of the character described which
15 will hold rings or other small objects to be
engraved without marring or defacing their
surface.
Another object of my invention is to pro-
vide a device of the character described
20 which will hold a ring in such a manner that
the setting will be held in position to be re-
moved easily or replaced.
Finally the object of the invention is to
provide means of the character described
25 that will be strong, durable, efficient, and
easy of operation, simple and comparatively
inexpensive to construct, and also in which
the several parts will not be likely to get
out of working order.
30 With the above and other objects in view,
the invention has relation to certain novel
features of construction and operation, an
example of which is described in this speci-
fication and illustrated in the accompanying
35 drawings, wherein:
Figure 1. is a perspective view of my in-
vention, Fig. 2. is a longitudinal section
of the same, Fig. 3. is a detail of a portion
of the band used to hold the article to be en-
40 graved showing the opening through which
the set of a ring may be passed to admit the
resetting thereof, and Fig. 4. is an end ele-
vation of my invention with the retaining
band broken away.
45 In the drawings, the numeral 1 designates
a hollow handle terminating in a ball shaped
grip 2. Within the handle 1 a sleeve 3 is
fixed and held against rotation. This sleeve
carries an annular groove 4 at one end and
50 internal threads 5 at its other end. A
sleeve 6 engaging over the sleeve 3 is held
in position by pins 7 which engage with
the shoulders formed by the annular groove
4 in the sleeve 3. By turning the grip 2 thesleeve 3 may be rotated ii the sleeve 6 and at 55
the same time the internal threads 5 co-act-
ing carried by a drawing rod 8 will cause the
rod to move longitudinally through both
sleeves and into a cavity 9 in the grip 2.
The forward end of the drawing rod 8 is 60
forked at 10 and is arranged to engage with
both ends of a concaved steel band 11 which
is bent to form a loop after passing through
a ferrule 12 which closes the end of the
sleeve 6. The shape of the steel band 11 is 65
best shown in Fig. 4 where the band is shown
in section. It will be noted that while this
band is concaved enough to prevent an object
slipping therefrom, it is not concaved suffi-
ciently to prevent the band from being 70
drawn into a comparatively small loop with-
out danger of kinking or bending it perma-
nently out of shape. The apertures 14 in the
ferrule 12 are curved to fit the concavity of
the steel band, while an elongated aperture 75
15 in the end of the ferrule designed to as-
sist in holding articles placed beneath the
steel band, has its ends curved at substan-
tially the same radius.
At 16 the band 11 is enlarged or made 80
wider and an opening 17 is cut therein to
admit the passing of the set of a ring there-
through. This opening 17 may be made large
enough to allow the passage of a Tiffany set-
ting or other two carat settings, but care 85
must be used in selecting the material for the
band, as a band of stiff material would likely
bend or buckle at this point. The ferrule is
reduced in thickness on either side to render
the end of this tool less bulky and to make 90
the work held in the tool more visible to the
operator. These reductions are shown in
Figs. 1 and 4 and are numbered 18.
It is obvious that this tool will be of great
assistance to an engraver who wishes to 95
make an inscription on the inner periphery
of a ring as well as to a stone setter or man-
ufacturing jeweler who has occasion to set
stones in articles which are hard to hold in
position for setting without defacing the 100
article. When a ring is placed in this tool
one side of the ring, no matter what its size
may be, will extend into the elongated aper-
ture 15, and the other side will be engaged
by the band 11, after the same has been 105
tightened by turning the grip 2, the con-
caved surface of the band in conjunction
with the engagement of the ring with the
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Mueller, Eduard Fredrick. Engraver's Tool, patent, April 18, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512243/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.