Well-Drilling Apparatus. Page: 3 of 5
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UNITED STATESPATENT OFFICE.
RICHARD DAVIS MOON, OF SAN ANGELO, TEXAS.
WELL-DRILLING APPARATUS.
No. 901,182. Specification of Letters Patent. Patented Oct. 13, 1908.
Application filed April 13, 1908. Serial No. 426,834.
To all whom it may concern: motor. The sprocket 15 is loose on the shaft
Be it known that I, RICHARD DAvIs MooN, 11 and is thrown in or out of gear with a
a citizen of the United States, and a resident clutch 13 on the shaft, by means of a lever 55
of San Angelo, in the county of Tom Green 14 the handle of which is at the front of the
5 and State of Texas, have invented a new and frame, for convenient operation.
useful Improvement in Well-Drilling Appa- 16 indicates a pulley loose upon the shaft
ratus, of which the following is a specifica- 11. and free to turn thereon. This pulley has
tion. a projecting block or clutch member 17 on 60
This invention relates to certain improve- the inside of the rim thereof, and to vary
10 ments in well drilling apparatus and has for the throw the block is capable of adjustment
its object to produce improved means for. to any one of the holes 18 in the rim of the
lifting the drill and permitting a quick and pulley. 19 is a clutch or driving member
unimpeded drop of the drill bar. The use fast upon the shaft 11 and located beside the 65
of a high or top heavy rigging or frame is hub of the pulley and provided with means
15 avoided, and a simple and light apparatus is to engage or strike the block or projection
provided which avoids the great jar and 17 on the inside of the rim of said pulley, as
noise found in the use of ordinary drill rigs, more fully described hereinafter.
and which will do the same work with less The drill rope 21 extends from a feed drum 70
power than an ordinary apparatus. The or spool 22 at the rear of the machine, over
20 cheapness and lightness of the rig are im- a guide pulley 23 at the rear, and a guide
portant features, and its tower or standard pulley 23a at the front, near the foot of the
can be folded so that the whole apparatus upright, thence over a pulley 25 at the top
can be readily hauled or transported from of the standard, and to connection with the 75
place to place without unshipping any part drill rod 26. A cross bar 9a is arranged be-
25 thereof. low the pulley 25, and a rod 9b extends up-
The invention is illustrated in the accom- ward from a sliding connection with the
panying drawings, in which cross bar to a connection with the hanger 25
Figure 1 is a side elevation of the appa- of the pulley 25, and a spiral spring 25b is 80
ratus. Fig. 2 is a top plan view thereof. arranged between the hanger and the cross
30 Fig. 3 is a detail side view of the lifting bar. The hanger 25b is provided with a pro-
clutch. Fig. 4 is a vertical section of the jecting pin 25c, which slides through the top
same, and Fig. 5 is a section on the line 5-5 cross bar 9o of the folding standards 9.
of Fig. 3. Fig. 6 is a detail front view of Between the pulleys.23 and 23a the drill 85
the pulley and its frame at the top pf the rope passes under a pulley 27 which is car-
35 standard. ried at the end of a long arm 28 hinged at
Referring specifically to the drawings, 6 its rear end, as at 29, to the rear upper cross
indicates the rigging frame. mounted on bar of the frame. The frame of the pulley
wheels 7 for, convenience of transportation. 27 is connected by a chain 30 to one end of 90
At the front end it has uprights 8 to the top a strap 31 which is attached at its other end
40 of which the folding standard 9 is hinged to the rim of the pulley 16, and when said
as at 10, to fold back upon or over the frame pulley is actuated by the operation of the
when desired. Any suitable fastening or de- clutch the drill rope is pulled down toward
vice may be used to hold the standard erect said pulley which hoists the drill, and when 95
while in use. Preferably braces 9 are used, the clutch is released the pulley turns back
45 which are bolted at their ends to the stand- freely, allowing the drill to drop and pro-
ard and frame and can be removed by tak- ducing the stroke.
ing out the bolts. The clutch member or drum 19, which is
Mounted upon bearing blocks at or about fast on the shaft 11 and which revolves 100
the middle of the lower sills of the frame is within the rim of the pulley 16, carries a
50 a shaft 11 which has suitable driving means bar 32 which is movable lengthwise in a
such as a sprocket 15 to which power may radial groove or recess 33 in the drum and
be applied by a chain belt from any suitable which is normally projected at its end be-
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Moon, Richard Davis. Well-Drilling Apparatus., patent, October 13, 1908; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511399/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.