US1826409A - Mounting of speed cup and rotor shaft - Google Patents

Mounting of speed cup and rotor shaft Download PDF

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Publication number
US1826409A
US1826409A US94096A US9409626A US1826409A US 1826409 A US1826409 A US 1826409A US 94096 A US94096 A US 94096A US 9409626 A US9409626 A US 9409626A US 1826409 A US1826409 A US 1826409A
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United States
Prior art keywords
frame
mounting
rotor shaft
shaft
speed cup
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Expired - Lifetime
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US94096A
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Zubaty Joseph
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Delco Electronics LLC
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AC Spark Plug Co
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Publication date
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Priority to US94096A priority Critical patent/US1826409A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42Devices characterised by the use of electric or magnetic means
    • G01P3/44Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/49Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G01P3/495Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field

Definitions

  • the magnet 5 is of a well known U shape.
  • Meansisproyided to limitthe rotation-10f thepeedeup asinfluenced by the hair spring at. a point; where-Ethejzero readingshall be were -P t e+ F r hi i' p ew i fi 'gle 16W! .5 i piye ed ,n a-ri h front of 1 f; ,w tlreplate 393. 7' 'llhe lower portion oftheangle Y member "55,, projects downwardly. where iten ,geges a.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Description

Oct. 6, 1931. ZUBATY 1,826,409
MOUNTING OE SPEED CUP AND ROTOR SHAFT Filed March 11, 1926 Otherobjects will Patented Oct. 6, 1931 1 l vThis invention relates to measuring instru- 'ments. It is particularly concerned withan smzs PATENT F E Josnrn' ZUBATY, or FLINT, MICHIGAN," AISSIGNOR TO A OSPARK' PLUG FLINT, MICHIGAN, A COMPANY or MIoHIGANU COMPANY, OF
; igtoun'r ne or SPEED our are noron' snarr I ,fiap nation filed March 11, 1926. Serial u 94,096.
" improved speedometer, but its novel construc- '-aS 'Welli tion will be found useful in other'instruments "Among the objects brine invention are an improvement in the'mounting of the magnet for a magneticspeedometer, an improvement in the mountingof a rotor shaft, and an im-,
provement in the, speed cup mounting.
appear as the full description proceeds. I i
In the drawings a Figure 1 is'a toprplan view of the frame and parts of the speedometer, the casing hav ing been removed. Figure-2iis a vertical section on line 22 of Figure 1. Figure 3 is a rear elevationof the lower part of the instrument. Figure 4 is a section on line 44 of Figure 3. Figure 5 is a detail showing in section the lower bearing of -a speed cup spindle. V
Referring by reference characters to the drawings, numeral l rep'resents a frame mem ber carrylngthe speedometer and odometer parts. This frame is a die casting and is of a somewhat box shape. At the right of F igure 2 will be seen the annular resilientplate .3
which is fastenedto the frame and which furnishes the sole connection between the in- 'strument and its casing. It isintended that this resilient plate 3 shall take the shocks and jars from the vehicle instrument board and absorb them before they are transmitted to the delicate parts of the instrument.
The magnet 5 is of a well known U shape.
'It engages the frame at three points. The
. trally secured to the frame by machine screw f lower point of contact with the frame isshown in Figure 2 at 7 and the two upper points at 9 as in Figures 1 and 4:. For securing this magnet to the frame a relativelylong channel bar 11 is used. This bar 11 is cen- 13. .One of the walls of the channel bar near the angularity of the magnet. It will be seen also fromFigure 1 by the dotted lines that the channel member overhangs the outer sides of the magnet.
rotor or first worm shaft with .the rotoris pushed down through the "vertical passage:
andfreleasing the shaft-1 7, an'oiling wick may-be placed in the spaceunder the screw .13 tolubricateshaft 17. y
the rotor the shaft is form'edwith a worm '21. This-worm 21 engages the worm .gear
'22 on the so-cal-led second-wormshaft. all] Will be seen that in assembling the parts, the
'Wa'y inthe frame and brought into geared engagement with Y the second worm shaft. For the: purpose of holding the'shaft 17in position use is madeof a clip 23. This clip is ofU shape, its upper arm engaging a shoul- I :der 26 on the shaft 17 and its-lower arm engaging the frame me'mberLj To prevent this clip slipping off the'frameand releasing its holdon shaft 17, the magnet holding bar 11 is made'use of. I From Figure 2 it will be seen that the central portion of this magnet holding bar projectsupwards sufliciently to prevent the clip23 fromslipping'off the frame The speed'indicatingmemberof the speedometer, or the speed cup; so-called, is mountedvby means of clamps25 on the sprindle 27.
Differing from the common construction of mountingLthe lowerwspindle bearing-in a frame member, I prefer to utilize the-rotor 'shaft'l'lforcarrying the lower bearing. It 'Willbe -SGGIPfI'OmIFlgUI'G 2 and better still from Figure i51that'the upper endof the rotorshaft .17 is provided with a shouldered recess 29. 4 Into this recess is inserted a-jewel carrier 31. :In the-bottom ofthejewel car rier is ajewel 33, the. upper surface of which is finishedto furnish a bearing for the'end of the spindle 27. The metal of the cup is crimped under the jewel as at 35 to hold the jewel in position. I Above therjewel 33 and engaging ashoulder ingthe cup 311s a hole jewe1.37 Forthepurpose of holding this holewjewel in positiongthe metal may be shaved intolyengagement therewith- .Over the speedcupj and. secured to the upper portion of, the frame, is a somewhatU shaped I plate 39; serews 4l1loeing shown 'to secure the .plate'to the frame. "The plate is provid'ed in this'o'pening is inserted a shouldered jewel Y carrier 43. Mo-untedin the jewel carrier v43 is a hole eWelQj-the metal-of the carrier;
. being shaved down to hold the jewel in posi 'tion as before. Surrounding the" circular np ere ortienfef the Carrier," whi'eh it with lcatin'g meiiiber a frame-' member remover,-
be observed lies aboveitheplaite139g is the ap t d p p v t PQUi I iQiE- level-4t 7 the fixed U-shape'd magnet is clamped to the opposite side. 1 [I claim: j 1. In'a magnetic measuring instrument, a 'frame a rotor shaft therein, a magnet, holding means'therefor a clip for retaining the rotor shaft'gthe magnet holderlpositioned to prevent the escape of the retaining clip." 2Q A measuring instrument, a rotary indiilitheirame member-filiaving a jewel carrier 1, mounted therein forthe' spindle: of the indi catingmember 'thecarrier extending slightly point convenient for'operation. ltextendslaloove. the frame, a hair spring adjusting to the rear and has a downward extremity spring 5 3,-; the; other end of the Qh'air spring i b ng; b n c fiethep nd e2h u l;
Meansisproyided to limitthe rotation-10f thepeedeup asinfluenced by the hair spring at. a point; where-Ethejzero readingshall be wer -P t e+=F r hi i' p ew i fi 'gle 16W! .5 i piye ed ,n a-ri h front of 1 f; ,w tlreplate 393. 7' 'llhe lower portion oftheangle Y member "55,, projects downwardly. where iten ,geges a. lug 57 prejectjng upwardlyifrlem the i mpg-The purpose oi the pivotal eon-1 v neetfioni of lever 5,5,is top'rovi'de a..,@o1tlt6 i0 ifoeslightlinaecuraeies in manufacture and assembly. fis ond lugifiilis also" provided on the-espeedpeup to limit, the rotation of the .i speed cuptoisomewhatlessthan,threehun ,Ij' dredsixty degrees; (360); The purposeof n this second liugviseto previentithe reading of the indicator; returning to, zero: after ithe .SPQQdfbf thepuehieleiexceeds.themaximum readingain'miles or kilometers per hour a s- V indieatedjbythe speed cupid. .5; j 7' 3 Fon-r et'aiining thespindleQZ from axial l 1 movement and for'holdiiigthe spring adjust 1 z H Zing-level tlfirmly. against the plate'39 Ipre- 1 i A fer-to use a U shaped resilient; member 61.
' lever' ournalled about the projection of the Je l ar ie -s ap d resilie tmemb one arm ret i g the p n l r m-axia I-m ment n t el herm g' he lever to; hold it in: adjustedgposition; y
JOSEPH ZUBAIY:
-flne arm of. thisiushapedmemberliesqafew 'thousandths ofan inch abe /,6 the ends-f the si indileaee iThe ethelj'ai' Of theU Shape I a '3 memher'iseforkedland engages'lever fiiad- 5 jaeent its:-pi vot; iAscrew 6'3 passes through the upper arm of thej U; shapedmember-and i I is extended into the jrame member. iBy i j: means of this screw the tensienioji;the I sl'iapedjspring'upontheileyeriis-madeVariet i; ableas; also is the clearanoe at therupperwend 4; i;
' The odometer mechanism tpalitrdf this invention. It: includes vehicle .z '.wheels,gone of which :is-dgesignatedby nu- 1 I of thespindlefl; V
meral 6.0; Thesewheelsmay be'dr iven by anyelsuitabl edriving *me ans'fnotf shown) I 'fromr-shafti22-fyThe'shafts for't'he odometer .7 wheels. as atv 62jwillbemountedin'the end walls- 0f theframe in theusual-way Itwil l i 7 therefore beseen that th e; odometer inechaaimism may beconveniently arranged-onone side-ef the intermediate'partof the'die-east I 1 I I V it I f iframe which carries rotor; shaft Hand In testimony whereof I aflix my ,signatur e.-.
US94096A 1926-03-11 1926-03-11 Mounting of speed cup and rotor shaft Expired - Lifetime US1826409A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070623A (en) * 1975-02-12 1978-01-24 Smiths Industries Limited Moving-coil electrical instruments with bearing structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070623A (en) * 1975-02-12 1978-01-24 Smiths Industries Limited Moving-coil electrical instruments with bearing structure

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