Stone Dressing Machine Page: 5 of 5
[3], 2 p. : ill. ; 23 cm.View a full description of this patent.
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838,454
sires or conditions. Depending from the
body portion 24 of said guide into the frame
is the hooked bill portion 26a of the said
guide, which has its corresponding side face
5 substantially in alinement with the corre-
sponding side of the aforesaid slot 4 of the
side 1. The extremity of this hooked bill
26a of the guide does not contact with the in-
ner face of the side 1, but extends in sufficient
ro proximity thereto as to positively guide the
aforesaid arm 7 in its vertical movement.
The frame hereinbefore described is of such
proportions as to permit its ready handling
for movement over the face of a stone; but as
15 the same is made preferably of metal of the
desired character and obviously under cer-
tain conditions rather heavy I provide legs
27, which are secured to the side members 1
and 2, with their extremities rounded, as at
20 -28, so that the frame may be readily moved
over the face of the stone.
In order to drive the shaft 17,1secure anup-
right tubing 29 to the floor of the room, shop,
or upon the ground through the instrumen-
25 tality of suitable fasteners 20, which pierce
the flanged lower end 31 of the said tubing
29. Fitted in the upper end of this tubing is
an upright 31, which is arranged adjustably
in vertical plane within the said tubing 29 by
30 means of a suitable set-screw 32, which
pierces the upper- end of the tubing 29 and
engages the upright 31. The upper extrem-
ity of the upright 31 is provided with a per-
foration in which is secured in any suitable
35 manner a horizontal beam 33, which is prefer-
ably circular in cross-section and provided
with a head 34 at its outer extremity.
Mounted for rotation upon this arm 31 is-a
drum 35, whose intermediate portion is larger
40 than its ends, as indicated by the reference
character 35', to form a pulley-wheel, the
outer end of the drum 35 providing a pulley
36 of smaller dimensions than the pulley 35',
with its free end so formed as to provide a
45 clutch-face 37 for coperation with a clutch-
face 38, arranged at the inner end of a tubu-
lar member 39. This tubular member 39 is
provided with screw-threads-40 for the recep-
tion of the coils at one end of the tubular
50 flexible connection 40, whose opposite-end
coils are fitted upon the screw-threaded outer
end of the aforesaid shaft 17. Obviously,
therefore, when the belts (not shown) of the
said pulleys 35' and 3.6 cause rotation of the
55 latter upon the beam 3.1 the clutch-faces 37
and 38 of the pulley 36 and tubular member
39, respectively, cause a rotation of the said
flexible connection 40, which latter being
connected with the aforesaid shaft 17 causes
6o rotation of the same, and consequently amovement of the respective arms 7, 12, and
16 and also the stem 15, and causes a vertical
reciprocation of the stone-dressing blade 9 in
a manner now well understood.
In order to discontinue operation of the 65
stone-dressing blade during rotation of the
pulleys 35' and 36, I provide the inner end of
the hollow drum 35 with an annular groove
41, in which engages the projection 42, de-
pending from the under face of the lever 43, 70
which is pivotally secured at its outer end in
any suitable manner to a bracket 44, which
latter is fixedly secured at its upper end to
the upper face of the aforesaid upright 31, as
clearly shown in the drawings. It will there- 75
fore be understood that thenormalpositionof
the drum- 35 with respect to the tubular mem-
ber 39- is such that the clutch-faces of each
are designed to be in engagement with each
other at all times, the said projection 42 of the 8 o
lever 43 being in a groove 41. of the drum.
Therefore movement of the arm 43 upon its
pivot will draw the drum and the clutch-face
37 from engagement with the clutch-face 38
of the tubular member 39, thereby discon- 85
tinuing rotation of the shaft 17 during fur-
therrotation of the pulleys 35' and 36.
While not altogether necessary, I provide
a cover for the top of the aforesaid frame,
which cover is secured in any suitable man- 90
ner to the corresponding connecting-braces 3
and which bridges the same in an arched
plane, as shown.
What is claimed is-
1. A machine of the class described com- 95
prising a rotatable shaft, a crank-arm car-
ried by the shaft, a pivotally-moun ted tool-
carrying arm, a connection between said
crank-arm and said tool-carrying arm, and a
guide for said tool-carrying arm. Too
2. A machine of the class described com-
prising a rotatable shaft, a crank-arm car-
ried by the shaft, a pivotally-mounted tool-
carrying arm, a connection between said
crank-arm and said tool-carrying arm, and a 105
shiftable guide for said tool-carrying arm.
3. A machine of the class described com-
prising a rotatable shaft, a crank-arm car-
ried by the shaft, a pivotally-mounted tool-
carrying arm, a connection between said i i
crank-arm and said tool-carrying arm, and
an adjustable guide for said tool-carrying
arm.
In testimony whereof I affix my signature
in presence-of two witnesses.
LON T. RHEA.
Witnesses:
W. A. KEITH,
GEO. F.. JOHNSON.0
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Reference the current page of this Patent.
Rhea, Learner T. Stone Dressing Machine, patent, December 11, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513216/m1/5/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.