US1265156A - Pressure-recorder. - Google Patents

Description

C. D. YOUNG.

PRESSURE RECORDER.

APPLICATION mso luLYs. 1909. nENEwED wu 2o. 1915.

Patented May 7, 1918. 4 SHEETS-SHEET l witnesses 4 SHEETS-SHEET 2.

Patented lMay 7,1918.

C. D. YOUNG.

PRESSURE RECORDER.

c. n. YOUNG.

PRESSURE RECORDER.

APYLICATION FILED IUL Y6| l|909- RENEWED JULY 20.1915.

1 ,265, l 56. Patented kMay 7,1918.

4 SHEETS-SHEET 3.

@'M f7 ci@ l C. D. YOUNG.

PRESSURE RECORDER.

APPLlcAnoN f|LEo1uLYe,19o9. RENEwEn JULY 20.1915.

1,265, 1 56. Patented May 7, 1918.

4 SHEETS-SHEET 4.

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UNTED STATES "PATENT FFlE@ CHARLES D. YUNG, 0F gUllUi, u

.AMERGAN STEAM GAUGE it *lflfli MANUFACUEEN CGliNZ, 0E BSTON, MASSACHUSETTS, A CORPORATION 0F IIIASSAGHUSETTS.

IPRESSURE-BECBJDER.

Specification of Let-ters Pat-ent.

Application led July G, 1909, Serial No. 5065172. Renewed Iuly 20, 1915. Serial No. L311,020.

To all whom t may concern:

Be it known that I, CHARLES D. YOUNG, a citizen of the United States, residing at Columbus, n the county ot Franklin and State ofhio, have invented a certain new and useful Improvement in Fressure-ltecorders, of Which the tollowingY is a specification.

The primary object or this invention is t0 provide an improved and convenient means for4 obtaining a graphical diagram of the hydraulic pressure at each movementI of the piston of a hydraulic press in mount-ing Wheels on axles, but the invention can be used for othe1 purposes and with other iiuid pressures or other stresses. a

The invention resides in the construction of' the parts of the instrument, as herein shown and described and then particularly pointed: out in the claims.

In the.V accompanying-drawings i-n which I have illustrated the embodiments ofthe invention and its application in use:

Figure 1 is a plan or top View With the interior mechanism shown in broken lines under the cover-gI Fig. 2A is avieW in eleva-tion of' the trent side offthecase as shown in Fig. 1, the interior parts being shovn'in broken lines;-

Figf.` 3 iis la horizontal sectional view ofthe line m-mof Fig. 2;

Fig. .bis a view in elevation ol'ftheright handend loffthe case with the interior parts shown in broken lines;

Fig. 5' is fa view showingtheinstrument attached to ahydraulicsWheel-pressused tor applying or removing Wheelsk to or from axles;

Fig; 6' is a sectional detail ofthev indicator.

Fig. 7 's a section onthe'liney-y Fig.- 3 lookingl down.

Fig;l 8 is a, section on the'same line y-y looking up;

`Fig. 9'is a detail Viewy of` the interior spnflingV `pa-Wl that engages; the tape Winding rol `.f

In the views; 7 designates lthe case which is, ofsuitable term` and capacity to `receive the operating parts.` and having `a top or coverhinged thereto at 7, and` a sliding bottom. 7F.' Yhen thetop and bottoni are in closedposition they areloclred by means 01E;A a bolt,` 7F# passed through. suitable` holes in both, saidb'olt beingprovidedwvith an eye 7 through which a seal or other secure lock is passed to prevent access of the Worlnnan to` the parts within the box, it being a feature ot my invention to provide a construction secure against unwarranted manipulation or forgery of the records. ln railroad practice it is important that those in authority be apprlsed oi detects in car Wheels. The rear side ot the case 7 1s provided with a large opening 7e through which the drumv and tape'can be removed,` and the cover is provided With-a slotted tongue 7E to embrace the shank of the drum of: that mechanism.

The devices Within the case are as follows.: A paper tape roll receiving spindle 8 mounted in suitable bearings, one of Which, 8a? is yielding` so that the spindle canl be easily inserted and' removed. The bearing also provides tension to prevent the spindle from turning too easily. The, spindle has secured to itl a longitudinally arranged spring clip 8b that is :tree at one endso that the inner end ot the paper tape can be slid under it and be held to keep the roll from turning on the spindle. er` drum 9 to unwind the tape from the roll on the. spindle 8. The. drum 9 has a mechanism for imparting to it an intermittent movement in one direction 0nlyconsisting of an external head 10 having a toothed' rim engaged by diametrically opposite spring pressed paws 10a. The head l0 is secured in the case by a set screw 12`en gaging a groove in the head and so as to permit the head to turn. The drum 9 is removably attached to this head l0 so as to be turnedyufith it and the paWls 10a prevent a return movement ofthe head or drum after it' has Wound the paper strip onto itself. The drum 9 and head l0 are intermittently rotated by an internal head l1 providedivith a grooved'end lla?" to receive a cordi llb'that extends to the exterior of the case and spri'ngpressedf pavifls'llC carried by the internal head that engages a circular rack l'l on the head l0. The drum 9 has Within it 'an 'axial istationary rod9f"on which is secured a spring 9b Which'- isalso secured tothe internal head l1V so as to tend to restore that head `by rotation to a; givenl position when pulled out of it by the cordllb., Therrod 9@ is secured in proper position in the case bya thumbunut 15 on the exteriorof the case. r:The spindlef8'" and drum 9 are loca-tedl parallel to each othervvith afspace between them and in this space is arranged and secured near the cover a platform or tablet 13b over which the tape passes from the spindle to the drum, the latter being provided With a slot 93 through which the free end of the tape is inserted to initially bind the tape to that member. The tablet or platform is flanked with anti-friction roller 13au to facilitate the passage of the tape onto and ofi' it. r1`he cover is provided with a glass pane l-l through which the operation of the marker can be observed, but a small portion of the cover is left open at the rear end of the pane, as seen at 14, to expose the edge of the tape for memoranda on the part of the operator or for identifying the several articles treated With the corresponding records made by the instrument.

The indicator shown in detail in Fig. 6 and designated generally by the character 16 is substantially the same as that now commonly used in devices of the class to Which the present invention belongs. lit has the usual straight line motion stylographic pen arm 16EL to the end of which is secured a small stylographic pen or other suitable devices 16b for marking and suitable means for securing proper pressure of the marking device on the paper tape. The arm is operated by pressure on a suitable piston stem 16c both Working in suitable casing 16d but in the present instance the casing is made With a vent 16e to release pressure should that become excessive, and the pen is held in zero position by means of a spring 16f acting on the piston stem.

Referring more particularly to Fig. 5 in Which my invention is shown as applied to a hydraulic press for pressing car wheels onto an axle, the character 17 designates the hydraulic pressure cylinder and 18 the rod of the piston working therein. The instrument, as a Whole, is communicably connected with the hydraulic cylinder by suitably connecting the casing 16 of the indicator with the chamber of the hydraulic cylinder, as usual or so that pressure in the cylinder is communicated to the indicator. The instrument is arranged With the tape in a horizontal position as being most convenient for the inscription of the memoranda upon the exposed part thereof. The cord 11", hereinbefore referred to is attached to a small Wheel 19 which is fixed on a shaft 2() having another larger Wheel or pulley 21 on Which is another cord 2121 attached to the piston rod 1S so that as said rod is moved inward under the action of pressure it Winds up the cord 111 and therefore moves the paper tape. The same pressure that moves the rod also, of course, moves the indicator and marker thereby describing on the tape a curve corresponding to the pressure exerted, as usual, generally in such devices. When the pressure is cut ofi, the piston of the hydraulic cylinder is returned to initial position by means of a Weighted chain22 attached to the piston to dravv it in the proper direction. The return of the piston under the action of the weighted chain can be speeded by opening a suitable cock to permit the discharge of the Water or pressure fluid from the cylinder. ln the return of the piston the cord 11b is, of course, reWound on the number 11 by the reaction of the spring 9b.

vWhat I claim and desire to secure by Letters Patent is:

1. In a pressure recorder, in combination, a case for containing a paper tape and means for supporting and means for moving the tape, a movable marking device and means for moving the same, the means for moving the tape and the marking device being actuated by the same source of pressure or stress, said case being constructed to prevent unauthorized access of the attendant to the marking device and provided With an aperture to expose a portion only of the tape beyond the zone of operation of the marking device for the inscription of memoranda thereon by the attendant.

2.` In a pressure recorder in combination, a case, a paper tape With means for intermittently moving the same and a stationary platform or tablet over Which the tape passes mounted in the case, a movable marking device to mark on said paper tape Where it passes over the platform or tablet, the means for moving the paper tape and the marking device being operative independently of each other, a common source of pressure or stress for operating both the marking device and the paper tape, said case constructed to prevent kunauthorized access of the attendant to the marking device and provided With an aperture to permit the inscription of memoranda on the tape.

3. In a pressure recording apparatus, the combination of a pressure-actuated marker, means for moving said marker, a record roll holder having trunnions at its ends, bearings for mounting said holder, in Which said trunnions are adapted to rotate, one of which bearings is yielding axially so that the holder may be removed, means for pressing said movable bearing toward the drum, means for preventing rotation of said bearing, a Winding drum, and means for turning said drum to draw the record strip from the roll holder and Wind it on the drum, the strip in passing from the holder to the drum being carried past and in contact with the marker.

4. ln a pressure recording apparatus, the combination of a pressure-actuated marker, means for moving said marker, a record roll holder, a Winding drum on Which the reccord strip is Wound and by Which it is drawn from the holder past the marker and in contact therewith, a toothed head to which the drum is removably attached, and an oscillating internal head having means for engaging the first drum and turning it intermittently when turning in one direction.

5. In a pressure recorder, the combination with a case, of a record sheet and a support therefor Within the case, a pressure actuated marker also Within the case arranged to hear on the record sheet, mechanism operable by fluid pressures and connected with said marker for movingthe same through distances proportional to such pressures, and means for moving the record sheet past the marker, the case being closed against unauthorized access of Workmen to the marking device, and having a transparent portion over the path of movement of the marking device, through which the action of said device may be observed, and having also an aperture located so as to expose a portion of Copiel o! this tent may be obtained for the record sheet near the path of the marker to permit the inscription of memoranda on the sheet.

6. A pressure recorder comprising in com bination a record member, a marker arranged to mark upon said record member, pressure controlled means for moving said marker in response to changes in pressure of the fluid of which the pressures are to be recorded, a case inclosing the operative elements of said recorder and having means to prevent unauthorized access of an attendant to said operative elements, and said case having means permitting the attendant to complete or supplement the record made by said marker.

V. K. REED.

ve cents each, by addressing the Commissioner of Patents Washington, D. C.

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