US2480070A - Liquid level gauge - Google Patents

Description

2 Sheets-Sheet 1 Aug. 23, 1949. H. D. YODER LIQUID LEVEL GAUGE Filed Nov. 19, 1945 ATTORN EYS FIG.2.

INVENTOR E E E A 25 Q E L: T,

r5: 2: 2 i: G Iv I IIIIII HOWARD D.YODER 3: I; a: v =1: E

Aug. 23, 1949. H. D. YODER LIQUID LEVEL GAUGE 2 Sheets-Sheet 2 Filed Nov. 19, 1945 'K'Nl FIGA.

INVENTOR.

HOWARD D. YODER BY Mm /Wk/5M ATTORNEYS has pointed out weakiie I I h It has been found that, the overhangingsides Patented Aug. 23 1949 IPA-TENT oc 2,480,070 mom LEVEL GAUGE Howard D. Yoder, Detroit, Mich, assignorto fenherthylnjector Company. Detroit, Mich fa cor oration of Delaware dpplicatign lflove nber 19, 1945,; Serial No. 629,516

1 h n n ion relates l u leve g u e to indicating the'l'ev'el o'fjaliquidin'aboileror other fluid container.

Extensive manufact rin .ex er enc in h art 1 and. imp vem ts .of the g ass covenfipr trams) wheneverthe bolts are. tightenedare broug tunderheavy stress and the outer edges of the iace tend to bend over under thepull and 'thi'aceftiridth dimension length position.

These effects, if carriedianenoug m cause breakage of the glass.

To protect theglass ,i 'om fiimilarbending l shows a tendency to spread particularly .at'

stresses the se or ub tant al and iieavrmet i e ion re u re To reduce weight while maintaining strength is an object of this invention.

To reduce machine shop labor by utilizing the smooth cold drawn suriaces is; another object.

Another object'is the 'use'ciflol'd drawn steel in an effort to secure material ofhigherstrength inherent to its cold working.

To reduce. eccentricloadin-s, bendingand deforrolled steelifsha-pes.

Another object is the thorough dispersal of stress concentrations by interposing the deep sides between bolts and glass.

In the drawings is shown a practical embodiment of the claims, although there is no intention of limitation to this precise form.

Fig. l is a front perspective elevation of the gauge;

Fig. 2 is a side elevation partly in vertical central section of the improved gauge;

Fig. 3 is a horizontal cross section therethrough;

Fig. is a rear elevation of a portion of the gauge;

Fig. 5 is a perspective view of the several main members from which the gauge is formed detached from each other;

Fig. 6 is a section on line 6-6, Fig. 2, illustrating the means for securing the clamping screws;

Fig. '7 is a diagrammatic cross section showing 3 Claims. (01. 73-330) 2 io a on th ht a U'-.be1t..securingme ns. The main elements of my improvedgall e. are formed from cold rolled bar stock and are'fash- .ioned with the minimum amountmoi machining operations. Thus, the member A, containing. the liquid column is preferably iormedaofa cOldli'olled bar. This bar is threadedat both ends fon coib nection tailpipes and has a formed liquid chamber between the ends which is open at the front, and covered by the sight glass in, the, usualfmanner. To hold the glass D in place and to formfa liquidtight seal, I employ the followin construction. E. isa flat bar of. cold rolled stockflwhic'h constitutes the face of the gauge and whichhasstamped or otherwise formed therein alongitudinally, er;- tending central slot E. .FandFfiare. flat bars .of cold. rolled stock and, of. a lighterfgauge than thebar E which are spaced iromf eaflh,,other {a distance equal to the width of themember ,A and .20

as b w n h side barsiF and .F' have are secured to the bar E by 'suitable'means, such punched therein adjacent to the outer ..edges thereof a series of apertures G' and have also adjacent to their inner edgesand near the opposite ends thereof the punchedapertures I -L"T.he

member A has arranged on the side thereof oppo- "site the channel. a series ofstamnin'gs. I Whichlare secured to the member .bysuitable means, such ,as by spot welding. Each ofjthq e. stampingsj'I .30.

providesa swivel connection to theend ofascrew Jwhichlatter threadedly engages across .bar. K adapted for insertion through the aligned apertures, G in the sidesF andF'. The swiveledjen- 'gagement is. formed by cutting a groove J inthe screw J and by formingthe 'm'emberl withQa raised flange I having ajnentrance slot Ittherein of sufiicient width'to receive the groove portion of the screw. A pin I is then inserted to hold the screw from detachment while permitting free rotation thereof. Thus, all of the screws J together with the cross bars K engaged therewith are secured to the member A but are free to be independently operated. To facilitate such operation the bar K has arcuate end portions K. The member A may be placed in position by, first, turning the cross bars K so that they will pass inward between the sides F and F and then turning each of these cross bars at right angles to engage the same with the aligned apertures G. The screws J may then be turned to force the cross bars K in an outward direction with the reaction that the member A is pressed against the glass bar D and gaskets O and 0', so as to form a liquid-tight seal. The glass D is located on the left of the center my improved construcin assembly by the clips P engaging in apertures H.

In the general statement of object it was mentioned that the overhanging sides of the glass cover tended to be bent over with the pull.

This tendency increases as the pull is exerted farther away from the supporting glass.

This stress is exerted in conventional gauges by round section bolts, hence the bolt center line is necessarily at some distance from the solid glass and gasket supporting edge (Fig. 7; U).

But if high strength steel is used, if a long narrow side section be substituted for bolt, if the narrow side be positioned parallel to the glass, it becomes possible to bring the center line of stress close in against the edge of glass.

Hence the fabricated cover secures the minimum overhang, least eccentric load, least distortion and, consequently, minimum glass breakage.

What I claim as my invention is:

1. In a liquid level gauge a member having apertures in the opposite ends thereof and a channel in one face thereof extending to connect with said apertures, a transparent plate covering said channel, a U-shaped frame member embracing said transparent plate and channel member, said frame including a slotted front plate and side plates extending in rear of the channel member and provided with series of apertures in the opposite sides of the rearwardly extending portion, a series of screws each swiveled to the rear face of said channel member, an oblong plate threadedly engaging each screw adapted when turned in one direction to pass between the sides of said frame and when turned transversely to engage opposite apertures in said sides and to transmit clamping stress from said screws to said frame.

2. A liquid level gauge comprising a member formed of cold rolled bar stock having threaded apertures formed in its opposite ends and a channel in one face thereof extended to connect with said apertures, a member including a front plate having a longitudinally extending slot therein and a pair of spaced parallel plates arranged on opposite sides of said slot and welded to said front plate to extend at right angles thereto and adapted to embrace said channel member, said parallel plates being provided with series of apertures therein adjacent to the outer edge portions thereof and all of said plates being formed of cold rolled stock requiring no machining of any of the surfaces thereof, a transparent panel extending between said parallel plates and said front plate and channel member to cover the channel of the latter, sealing means between said transparent panel and channel member, a plurality of clamping screws each having a swivel engagement with said bar member and arranged in registration with aligned pairs of apertures in said parallel plates, and cross bars threadedly engaging said screws adapted when turned in one direction to pass between said parallel plates and when turned at right angles thereto to engage aligned pairs of apertures in said parallel plates.

3. A liquid level gauge comprising a member formed of cold rolled bar stock having threaded apertures formed in its opposite ends and a channel in one face thereof extended to connect with said apertures, a member including a front plate having a longitudinally extending slot therein and a pair of spaced parallel plates arranged on opposite sides of said slot and welded to said front plate to extend at right angles thereto and adapted to embrace saidchannel member, said parallel plates being provided with series of apertures therein adjacent to the outer edge portions thereof and all of said plates being formed of cold rolled stock requiring no machining of any of the surfaces thereof, a transparent panel extending between said parallel plates and said front plate and channel member to [cover the channel of the latter, sealing means between said transparent panel and channel member, a plurality of clamping screws each having a groove near its inner end, a sheet metal stamping for each screw slotted to receive the groove portion thereof and welded to the rear face of said bar member, said stampings being located to register said screws respectively with aligned pairs of apertures in said parallel plates, and a cross bar threadedly engaging each screw adapted when turned in one direction to pass between said parallel plates, said cross bars having arcuate end portions permitting the turn of the same into engagement with aligned pairs of slots to form abutments for the clamping screws.

HOWARD D. YODER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 181,269 Keese et al Aug. 22, 1876 1,181,139 Huntress May 2, 1916 1,227,196 Pocock May 22, 1917 FOREIGN PATENTS Number Country Date 397,931 France May 21, 1909 680,229 France Jan. 17, 1930 809,096 France Dec. 3, 1936

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