Hydraulic Pressure and Time Indicator Page: 3 of 5
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UNITED STATES PATENT OFFICE.
CLYDE D. HELM, OF FORT WORTH, TEXAS, ASSIGNOR TO OIL MILL MACHINERY &
MANUFACTURING COMPANY, OF FORT WORTH, TEXAS, A CORPORATION OF TEXAS.
HYDRAULIC-PRESSURE AND TIME INDICATOR.Specification of Letters Patent.
Patented Dec. 24, 1918.
Application filed February 9, 1918. Serial No. 216,157.
To all whom it.may concern:
Be it known that I, CLYDE D. Hnmr, a
citizen of the -United.States, residing at Fort
Worth, in the county of Tarrant and State
5 of Texas, have invented certain new and
useful Improvements in Hydraulic-Pressure
and Time Indicators, of, which the following
is a specification.
My invention relates: to indicators, and
10 more particularly to indicators for record-
ing the times when hydraulic cylinders are
in operation and to indicate when the cylin-
ders commence work or reach the required
pressure and which will indicate when the
15 pressure in the cylinders goes below the re-
quired pressure. The device is particularly
useful in cotton seed oil mills to prevent
waste of oil. If a press stops working, as
when through the carelessness of an em-
20 ployee, oil will waste. The object of this
invention is to provide a simple device which
will instantly, indicate the time when the re-
quired pressure ceases and to record the time
when the press stops and when it starts.
25 Other objects, and -advantages will be fully
explained in the following description and
the, invention will be more particularly
pointed out in the claims.
Reference is, had, to the accompanying
30 drawings which form a part of this applica-
tion.
Figure 1 is a perspective view of the in-
dicator. Fig. 2 is an enlarged interior eleva-
tion, showing the relative positions of the
35 operating parts. Fig. 3 is a plan view of the
interior mechanism., Fig. 4 is a detail view
of the main operating pulley. Fig. 5 is a
detail plan view of the recording dial and:
the release therefor. Fig. 6 is a side eleva-
40 tion of the recording dial. Fig. 7 is a detail
view, showing the recording strip which is
fed from;the indicator during operation.
Similar characters of reference are used
to indicate the same parts throughout the
45 several views.
The indicator herein set forth is a time
operated indicator, a clock being inclosed in
a casing 1 which is attached to the main cas-
ing 2. The clock is provided with a project-
50 ing shaft 3 which is connected to the shaft 4
by clutch jaws 5. The operating mechanism
is provided with a frame composed of two
members. One frame member has arms 6 at
the upper side and at the lower side, the
55 frame substantially I-shaped, and this frameis attached to the casing. 2 by sleeved bolts
7. The other frame member has arms 8.
which are attached to the arms 6 by bolts 9.
A pulley 10 is rigid with shaft 4 and is
driven by the clock mechanism. The pulley 60
10 serves as the recording-strip feeder and
as a bearing for the dial recording wheel,11.
The recording-strip 12 is wound on a drum-
13 which is journaled in loose or open bear-
ings 14 which are formed on the lower frame 65
arms 6 and 8. The drum 13 will be held in
place by gravity. The frame members are
provided-with.open bearings 15 and a grav-
ity pulley 16-cooperates with the main pulley
10 for feeding the strip 12. When the clock 70
mechanism drives the pulley 10, the pulley
16 clamps the strip 12. thereon by gravity
and in this manner the strip 12- is fed for-
ward off the drum 13. The strip 12 is pro-
vided with figures indicating the hours and 75
minutes and marks for. indicating the min-
utes and the hours., The -recording strip .12
is timed with the clock -when the device is
started or set to work. The recording strip
will be fed regularly forward whether any 80
record is made or not. When there is no
record made, this shows that the press is not
being operated. A dial wheel punch 11 is
provided for making records on the strip
12. The wheel is provided with radial teeth 85
on the periphery thereof which will per-
forate the strip 12 for the purpose of making
records thereon. This wheel will be oper-
ated by friction and by the strip 12 pulling
on the teeth of the wheel. The.wheel 11 is 90
carried in spring controlled bearing arms 17
which are rigid with a shaft 18 which is
journaled in upper arms 6 and 8. A spring
19 is coiled about one part of the shaft 18
and is caught on the arm 6 at one end and 95
the other end of the spring bears down. on
the bearing arms 17. In this manner the
wheel 11 is made to perforate the strip 12.
Working connection of the wheel 11 and the
pressure in the hydraulic cylinders is made 100
as follows: A pipe 20 is to be connected to
the hydraulic cylinder and a curved pipe 21
is connected to the pipe 20. The curved
pipe 21 is closed at the end 22 and is pro-
vided with a projecting arm 23 which car- 105
ries a gage screw 24. The screw 24 is adapt-
ed to engage a release 25.which is, adapted
to lift the dial wheel 11 but of contact with
the strip 12. When the press is not running
the arm 23 will press the screw 24 down on 1101,288,886.
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Reference the current page of this Patent.
Helm, Clyde D. Hydraulic Pressure and Time Indicator, patent, December 24, 1918; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1256535/m1/3/?q=%22%22~1: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.