US1274189A - Fluid-pressure recorder. - Google Patents

Description

T. W. NEWBURN.

FLUID PRESSURE RECORDER.

APPLICATION FILED MAR. 20. m5.

1,274,189. Patented July 30, 1918. f

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T. W.'NEWBURN.

FLUID PRESSURE RECORDER,

APPLICATION FILED MAR. 20. 1915.

1,274,189. Patented Jul ,1918.

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THEODORE W. NEWIBURN, 0F EDGEWOOD, PENSYLVANIA, ASSIGN OR TO THE WESTING- HOUSE AIR BRAKE COMPANY, OF WILMERDING', PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

To all whom it may concern:

Be. it known that I, THEODORE W. N E W- BURN, a citizen of the United States, residmg at Edgewood, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Fluid- Pressure Recorders, of which the following is a specification.

This invention relates to recording devices, and more particularly to a device for recording variations in fluid pressure.

The particular type of recording device for which this invention is designed employs a moving sheet or band upon which the record is made, a mechanism, such as a clock work movement, being provided for effecting the movement of the record sheet;

One obj ect of my invention is to provide a device for starting and stopping themovement of the sheet and controlled byfluid,

the pressure of which is to be recorded, so that movement of the sheet takes place only when fluid under pressure is supplied to the recorder.

In SOme cases, it may be desirable to have a record of the time elapsing between periodical admissions of fluid to the recorder and for this purpose, another feature of my invention consists in providing means controlled by fluid, the pressui'e of which is to he recorded for effecting the movement of the record sheet at a slow speed when no fluid under pressure is supplied and adapted to cause a more rapid movement of the sheet upon supplying fluid to the recorder.

In the accompanying drawings; Figure 1 is a front elevation of a fluid pressure recording device with my improvement applied thereto; Fig. 2 a side elevation thereof Fig. 3 a plan View thereof; Fig. 4 a front elevation of a portion of a recording device with a device applied in accordance with my FLUID-PRESSURE RECORDER.

Specification of Letters Patent. Patented J llly 30, 1918. Application filed March 20, 1915. Serial No. 15,683.

trolled according to the pressure of the fluid for recording the pressure on the record sheet 3. p V I The mechanism for moving the arm 4: according to variations in fluid under pressure is not specifically shown in the drawings, any desired mechanism being adapted for this use, such, for example, as that shown in either one of prior Patents No. 18%A11 of W. F. De Forest, dated October 18, 1892, or No. 1,072,161 of A. P. Phillips,'dated September 2, 1913.

Projecting through the side of thecasing of the clock work mechanism is a shaft 5 carrying a cross bar 6 at the end and said shaft is connected to the escapement mechanism of the clock, so that the 6 rocks with the escapement and by stopping the movement of the bar, the running of the clock mechanism can be stopped.

According to my invention, a small piston cylinder 7 is mounted on the base of the recorder, in vertical alinement with the cross bar 6 and within the cylinder is a piston 8 carrying a rod 9, to the upper end of which is attached a conical trip 10 adapted to engage the cross bar 6.

A tube 11 opens to the chamber below the piston 8 and is adapted to admit thereto fluid flowing to the recorder,the pressure of which is to be recorded.

In operation, the trip 10 is normally maintained by gravity in the position shown in Fig. 1, in which. the cross bar 6 is prevented -from'movin'g by engagement with the trip 10. Upon supplying fluid under pressure to the recorder, the same also flows through the tubell to the under side of piston 8' and the piston is'thereby actuated, so that the trip 10 is elevated to permit movement of In Figs. 4 and 5 of the drawings, a construction is shown whereby the record sheet can be run at a slow speed when no fluid and the trip 10' pressure is being recorded and at a higher speed when recording fluid pressure.

In this case, the clock mechanism is pro: videdwith a suitable attachment such that by moving a projecting lever 12 to its upper position the clock mechanism will operate at a slow speed and by moving the same downwardly the clock mechanism will run at a higher speed.

Means adapted to change the speed of the clock movement is shown in Fig. 6 of the drawings, in which the lever 12 is pivotally connected to a driven gear A of the clock movement.

Two escapement dinary construction devices B and (lot orare mounted on opposite sides of the gear A, the escapement device B having a pinion D adapted to mesh with gear A and the escapement device C having a gear E adapted to mesh with said gear.

The escapement devices have their respective gear ratios soproportionedthat the escapement device 13 will cause the clock movement to run at a slow speed and the escapement device C at a higher speed,

The gear A may be thrown into mesh with eitherthe pinion I) or the gear E by the movement of lever 12, at the same time remaining in mesh with the gearing of the clock movement. 7

Pivotally mounted on the clock casing is a rocker arm 13 having a forked end adapted to engage the lever 12 and the opposite end of the arm 13 is pivotally connected to the piston rod 9 of piston 8. r

In operation, it will be evident that when there is no fluid under pressure acting on the piston 8, the same will rest in its clownward position, so that the arm 13 operates to maintain the lever 12 in its upper position, in which the clock mechanism runs at a slow speed and by moving the record sheet, indicates the time that no pressure is being recorded.

When fluid under pressure is supplied to the recorder, the piston 8 is actuated therebyto shift the arm 13 and move the lever 12 downwardly. The clock mechanism then operates at a higher speed while variations in fluid pressure are being recorded.

Copies oi this patent may be obtained for Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination with a mechanism for operating a record sheet and a recording arm operated by variations in fluid under pressure for recording said variations on the record sheet, of means operated by fluid, the pressure of which is to be recorded, for controlling the operation of said mechanism.

2. The combination with a mechanism for operating a record sheet and a recording arm. operated by variations in fluid under pressure for recording said variations on the recordsheet, of a piston subject to fluid, the pressure of which is to be recorded, for controlling the operation of said mechanism. r

3. The combination with a mechanism for moving a record sheet at different speeds and means for recording variations in fluid pressure on the record sheet, of means operated by fluid, the pressure of which is to be recorded, for determining the running speed of said mechanism.

' 4. The combination with a mechanism for moving a record sheet and adapted to run at a high speed and a low speed, a lever adapted in one position to adjust said mechanism to run at the high speed and in another position at the low speed, and means for recording variations in fluid pressure on the record sheet, of means operated by fluid, the pressure of which is to be recorded, for actuating said lever.

5. The combination with a mechanism for moving a record sheet and adapted to run at a high speed and a low speed, a lever adapted in one position to adjust said mechanism to run at the high speed and in an other position at the low speed, and means for recording variations in fluid pressure on the record sheet, of a piston operated by fluid, the pressure of which is to be recorded, for operating said lever.

In testlmony whereof I have hereunto set my hand.

five cents each, by addressing the Commissioner- 01 latents, Washington, D. G.

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