US1788871A - Ratchet-driven odometer - Google Patents

Ratchet-driven odometer Download PDF

Info

Publication number
US1788871A
US1788871A US173036A US17303627A US1788871A US 1788871 A US1788871 A US 1788871A US 173036 A US173036 A US 173036A US 17303627 A US17303627 A US 17303627A US 1788871 A US1788871 A US 1788871A
Authority
US
United States
Prior art keywords
pawl
ratchet
shaft
driven
wheels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US173036A
Inventor
Helgeby Ralph Olaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delco Electronics LLC
Original Assignee
AC Spark Plug Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AC Spark Plug Co filed Critical AC Spark Plug Co
Priority to US173036A priority Critical patent/US1788871A/en
Application granted granted Critical
Publication of US1788871A publication Critical patent/US1788871A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • G01P3/4953Devices 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 with a counter for the covered distance incorporated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/26Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/50Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
    • B60Q1/54Arrangements or adaptations of optical signalling or lighting devices the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating speed outside of the vehicle
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06MCOUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00Design features of general application
    • G06M1/04Design features of general application for driving the stage of lowest order
    • G06M1/041Design features of general application for driving the stage of lowest order for drum-type indicating means
    • G06M1/042Design features of general application for driving the stage of lowest order for drum-type indicating means with click devices
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06MCOUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00Design features of general application
    • G06M1/04Design features of general application for driving the stage of lowest order
    • G06M1/06Design features of general application for driving the stage of lowest order producing continuous revolution of the stage, e.g. with gear train
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K21/00Details of pulse counters or frequency dividers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/15Intermittent grip type mechanical movement
    • Y10T74/1503Rotary to intermittent unidirectional motion
    • Y10T74/1508Rotary crank or eccentric drive

Description

Jan. 13, 1931. R. o. HELGEBY RATGHET DRIVEN ODOMETER Filed March 5, 1927 gwwnto o a z z yf Patented Jan. 13, 1931 Qumran STATES PATENT orrlcs RALPH OLAF .HELGEBY, QF FLINT, MICHIGAN, ASSIGNOR TO A C SPARK PLUG COM- PANY; or FLINT, MICHIG N, A COMPANY or MICHIGAN RATCHET-DRIVEN ODQMETER Application filed March 5,
My invention relates to improved means for driving the odometer mechanlsm of a speedometer.
ter mechanism, this friction is avoided andv consequently there is much less strain placed on the flexible driving member which connects the speedometer with the transmission or front wheel and therefore less likelihood of breaking it.
Another object is to provide odometer driving mechanism consisting of a double pawl and ratchet, one ratchet driving the season mileage figure wheels on one half of the movement of the pawl, and the other ratchet drivin the trip mileage figure wheels on the other half of the movement. Thus by driving the figure-wheels at differenttimes, the friction is equalized and the power required is reduced by one half.
With the above and other objects in view, my invention will be more clearly understood by referring to the specificationand acconr.
panying drawing, in. which:
Figure l is a fragmentary front view of a speedometer, with the housing and face plate removed, showing my improved ratchet drive for the odometer mechanism.
Figure 2 is a section taken on the of Figure 1. V
In the drawings, the numeral 10 designates aspeedometer main frame having bosses 12 to which is attached the odometer frame 14: by screws 16. Journalled in the main frame is a driving Worm shaft 18 having a worm gear 20 cut at its upper end, and being provided with a square end 21 which engages the usual flexible driving member (not shown) line 22 vi (led and 1927. semu No. 173,036.;
connecting the speedometer with the transmission or front wheel. Keyed or otherwise held in the shaft 18 is a short pieceof flexible shaft 22 which drives the speed indicating mechanism (not shown).
A second shaft 24, journalled in the main frame 10, is provided with worm teeth 26 which mesh wi'th'worm gear 20; Eccentrically mounted as at 27 on this shaft is an arm 28 having its opposite end 30 pointed to form apawl. "This pawl engages ratchet wheel 32 mounted on the season mileage figur wheel shaft 34. The ratchet wheel '32 drives the season mileage figure wheels in the usual manner. Pivoted on the arm 28, by a loose rivet 86,. is a pawl member 38, which engages ratchet wheel 40 mounted on the trip mileage figure wheel shaft 42. The ratchet wheel 40 drives the trip mileage figure wheels it in the usual manner through the reset mechanism (not shown) and gears 46. The pawl member 88 is provided with a bent over portion 48, to which is attached a tension spring 50, the opposite end of which is hooked around thestar wheel shaft 52. This spring serves to hold both pawls in driving engagement with their respective ratchetwheels.
' Fastened tothe odometer frame 14; by screw 54 is a stamped spring member 56 having bent portions 58 and 60, which engage the teeth of the ratchet wheels and prevent the reverse rotation of the latter when the pawl is being returned to starting position.
Itwill be seen that as the shaft 24 ro fated, the arm 28 will moved back and forth] Each time it is moved toward the front of the speedometer it will advance the ratchet wheel 32 one or more notches dependent upon the amount of eccentricity pro.- also. upon the pitch of the-teeth in the ratchet wheel. As the arm is'returned to its original position, the pawl member 38 will rotate the ratchet wheel 40 a corresponding amount. 1
Obviously it will only require approximately one half as much power to drive the odometer mechanism when using ,my doublc ratchet, as only one half of the figure wheels are being driven at any one time.
By using this ratchet drive, I have been able to eliminate four worm gears and one spur gear from the usual odometer driving mechanism. This not only reduces the cost of manufacturing the speedometer but also renders it much easier to drive, thereby prolonging the life of the flexible driving member connecting the speedometer with its driving means.
it is thought from the foregoing taken in coi'inection with the accon'ipanying drawing that the construction and operation of the device will be apparent to those skilled in the art, andv that various changes in size, shape, and proportion and details of construction may be made without departing from the spirit and scope of the appended claims.
I claim:
1. In a device of the class described a pair of ratchet wheels, a driven shaft, a pawl eccentrically mounted on said shaftand adapted to rotate one of said ratchet wh els when the pawl is moved in one direction, and a sec ond pawl associated with the first pawl and adapt id to rotate the other ratchet wheel when the first pawl is moved in the opposite direction.
2. In a device of the class described, a pair of ratchet wheels, a driven shaft, a pawl eccentrically mounted on said shaft and adapted to rotate one of said ratchet wheels when the pawl moved in one direction, a second pawl associated with the rst pawl and adapted to rotate the other ratchet wheel when the first pawl is moved in the opposite direction, and a single spring serving to hold both pawls against their respective ratchet wheels.
3. In a device of the class described, a driven shaft, a double pawl journalled eccentrically on said shaft, a ratchet wheel rotated by movement of the pawl in one direction, and another ratchet wheel rotated by movement of the pawl in the opposite direction.
41-. In a device of the class described, a driven shaft, a pawl journalled eccentrically on said shaft, a ratchet wheel driven by said pawl, a pawl member pivoted on said pawl, and a second ratchetwheel driven by said pawl member.
5. In a device of the class described, a driven shaft, a pawl journalled eccentrically on said shaft, a ratchet wheel driven by said pawl, a pawl member pivoted on said pawl, a. second ratchet wheel driven by said pawl memb-r, and a single spring serving to hold both the pawl and the pawl member against their respective ratchet wheels.
6. In a device of the class described, a pair of ratchet wheels, a driven shaft, a pawl eccentrically mounted on said shaft and adapted to rotate one of said ratchet wheels when the pawl is moved in one direction, and a sec and pawl pivoted on the first pawl and adapted to rotate the other ratchet wheel when the RALPH OLAF HELGEBY.
US173036A 1927-03-05 1927-03-05 Ratchet-driven odometer Expired - Lifetime US1788871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US173036A US1788871A (en) 1927-03-05 1927-03-05 Ratchet-driven odometer

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US173036A US1788871A (en) 1927-03-05 1927-03-05 Ratchet-driven odometer
GB293/28A GB286594A (en) 1927-03-05 1928-01-04 Improvement in and relating to odometer driving mechanism
DEA52931D DE495134C (en) 1927-03-05 1928-01-08 Counter drive, especially for odometer
FR647534D FR647534A (en) 1927-03-05 1928-01-20 Improvement in ratchet-controlled speedometers

Publications (1)

Publication Number Publication Date
US1788871A true US1788871A (en) 1931-01-13

Family

ID=22630260

Family Applications (1)

Application Number Title Priority Date Filing Date
US173036A Expired - Lifetime US1788871A (en) 1927-03-05 1927-03-05 Ratchet-driven odometer

Country Status (4)

Country Link
US (1) US1788871A (en)
DE (1) DE495134C (en)
FR (1) FR647534A (en)
GB (1) GB286594A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069904A (en) * 1960-02-01 1962-12-25 Lyell D Henry Means for sensing roughness of a roadway surface
US3202127A (en) * 1963-04-17 1965-08-24 Veeder Root Inc Rotary operator with indicator
US4070916A (en) * 1976-11-15 1978-01-31 Donald Bogosh Speedometer-odometer apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136144B (en) * 1959-08-28 1962-09-06 Siemens Ag Counters, especially telephone charge counters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069904A (en) * 1960-02-01 1962-12-25 Lyell D Henry Means for sensing roughness of a roadway surface
US3202127A (en) * 1963-04-17 1965-08-24 Veeder Root Inc Rotary operator with indicator
US4070916A (en) * 1976-11-15 1978-01-31 Donald Bogosh Speedometer-odometer apparatus

Also Published As

Publication number Publication date
DE495134C (en) 1930-04-02
GB286594A (en) 1928-10-25
FR647534A (en) 1928-11-26

Similar Documents

Publication Publication Date Title
US1788871A (en) Ratchet-driven odometer
US1735923A (en) Ratchet-drive reduction
US2323415A (en) Intermittent drive gearing
US1798941A (en) Ratchrt-driven odometer mechanism
US1699653A (en) Motor-reduction gearing
US1370747A (en) Illuminating system
US1009503A (en) Self-starting device for internal-combustion engines.
US1394455A (en) Register
US2151417A (en) Power driving mechanism
US2360927A (en) Counter
US1963104A (en) Stop for rotating parts
US2275874A (en) Take-up mechanism for textile machines
US1951191A (en) Ratchet movement
SU51315A1 (en) Spring motor for low power mechanisms
US1451793A (en) Reversible driving gear
US1121923A (en) Gearing for wave-motors and the like.
US840581A (en) Mechanical movement.
US993738A (en) Variable-speed pedal-gear for cycles, motorcyles, &c.
US1366531A (en) Starting device for engines of motorcycles
US3175416A (en) Torque lock release for clutch motors
US1482450A (en) Power-transmission meceanism
US919790A (en) Secondary electric clock.
US1864330A (en) Odometer reset mechanism
US1362507A (en) Transmission and change-speed mechanism
SU602727A1 (en) Gapless gearing