US676440A - Device for rotating driving-shafts of locomotives. - Google Patents
Device for rotating driving-shafts of locomotives. Download PDFInfo
- Publication number
- US676440A US676440A US3204700A US1900032047A US676440A US 676440 A US676440 A US 676440A US 3204700 A US3204700 A US 3204700A US 1900032047 A US1900032047 A US 1900032047A US 676440 A US676440 A US 676440A
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- Prior art keywords
- frame
- shaft
- driving
- supporting
- gears
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/14—Gearings for reversal only
- F16H3/145—Gearings for reversal only with a pair of coaxial bevel gears, rotatable in opposite directions
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- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19219—Interchangeably locked
- Y10T74/19377—Slidable keys or clutches
- Y10T74/19414—Single clutch shaft
- Y10T74/19484—Single speed forward and reverse
- Y10T74/19493—Bevel gears
Definitions
- the object of this invention is to produce a device for transmitting power and particularly for rotating in either direction the driving-shaft of a locomotive-engine while stationary, whereby the valve or other parts of the engine may be adjusted.
- Figure 1 is an end elevation of my improved device for rotating the driving-shaft of a locomotive.
- Fig. 2 is a sectional elevation taken on line 2 2, Fig. 1.
- Fig. 3 is a sectional plan taken on line 3 8, Fig. 2.
- Fig. 4 is a detail section taken on line 4 4, Fig. 2.
- Fig. 5 is a diagram view representing a side elevation of the main driving-wheel, eccentrics, and valve of a locomotive with my improved device in position thereon.
- Fig. 6 is a side elevation of a portion of the main supporting frame and box.
- Fig. 5 is the main driving-wheel (shown in dotted lines) of a locomotive.
- 10 10 are the eccentrics; 12 12, the eccentric-rods; 13, the valve-stem, and 14 the valve.
- the main drivers 11 on each side of the locomotive are first raised from the tracks by four sliding trucks 15 15, having rollers 16 journaled therein.
- One of the trucks 15 is placed upon the track 17 at each side of the driving-wheels 11, with the peripheries of the rollers 16 touching the periphery of the driver 11.
- the rollers 16 are fast in pairs to shafts 18, one of each pairbearing against one main driving-wheel, the other of each pair bearing against the other main driving-wheel on the opposite track.
- the trucks 15 15 on the same track are joined together by the rods 19, screw-threaded to receive nuts 20, and as said nuts are screwed up the trucks 15 are drawn toward each other and the drivers 11 are gradually raised from the track.
- the main driving-wheels 11 are rotated by rotating one of the shafts 18 and the rollers 16 fast thereto.
- the driver is divided by marks upon the periphery into fourequal parts. Said driver is rotated as described until each of the marks thereon comes in line with a stationary mark on the locomotive, when the valve-gear is adjusted until the valve is in the correct position with relation to the steam-ports.
- the herein-described device for raising the drivers from the track is old, and as at pres'- ent operated the shaft 18 is rotated by a handlever pivoted upon said shaft and having a pawl pivoted thereto, which engages a ratchet fast to said shaft. This manner of rotating the shaft 18, and thusl rotating the driver, is
- Said motive power may be of any type convenient and accessible inthe shop where the device is operated.
- the spindle 21 is provided with a flange 22, fastened by a screw-threaded portion to a rotary carrier-frame 28.
- Said carrier-frame has two pinions 24 24, each of the same diameter and number of teeth, journaled upon sleeves 25, said sleeves being rigidly fastened to the carrier-frame 23 by bolts 26.
- 4Said gear 27 has thirty-six teeth and is stationary, being attached by a screw-threaded portion 29 against a shoulder 30 upon the main supporting-frame 3l.
- the frame 3l has two arms vroo 32 32 thereon, with bearings 33 therein to receive the hubs of the bevel-gears 34 34.
- One half of the bearings 33 is formed in each of said arms 32.
- the other half is formed by a cap-box 35, fastened by a bolt 36 to said arms, a tie 37 joining the two cap-boxes to each other.
- the bevel-gears 34 turn loose upon the shaft 18 and are each provided with a tooth 38, one the reverse of the other and each adapted to engage a recess or space 39 in a clutch member 40.
- Said clutch member is splined to the shaft 18 and is provided with an annular groove 41, which engages an eccentric-pin 42 upon a rock-shaft 43, which is rocked in a bearing 44 in the tie 37 by a handlever 45.
- Said hand-lever is limited to a halfrotation by the stops 46, fast to said tie 37.
- the gear 28 has two more teeth than the gear 27, and as the gear 27 is stationary7 it will be seen that as the pinions revolve the gear 28 will be rotated two teeth at each rotation of the carrier-frame 23.
- the gear 28 is fast to a driving-shaft 47, havinga bearing in the main frame 31.
- Said driving-shaft has a bevel-pinion gear 48 fast thereto and meshes the bevel-gears 34.
- the carrier-frame 23 rotates upon the driving-shaft 47 as abearing.
- the operation of the device as a whole is as follows: Assuming the necessary power to be transmitted to the spindle 21 to rotate the same, the carrier-frame 23 will rotate upon the driving-shaft 47, carrying the pinions 24 with it. Said pinions meshing, the stationary gear 27 will be rotated upon the sleeves 25, and as the number of teeth in the gear 28 differs from the number in the gear 27 said gear 28 will be rotated during one rotation of the carrier-frame an amount proportional to the said difference in teeth, in the presentinstance two teeth.
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear V fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gearv fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller-shaft, and gearing connecting said shafts.
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which drivin g-shaft said carrier-frame rotates, a rotatory gear fast to said driving-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller shaft, gearing connecting said shafts, and mechanism for reversing the direction of rotation of said roller-shaft.
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion gears j ou rnaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrrier-frame rotates, a rotatory gear fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller-shaft, a pair of bevel-gears loose upon, said roller-shaft, a bevel-pinion fast to said driving-shaft, a slid- IOO II.O
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gear fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which,said supporting -frame is supported, said supportingframe having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, and gearing connecting said shafts.
- a rotate ry carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a-
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supporting-frame, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gear fast to said driving-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, said supporting-frame having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, a tie joining said capboXes to each other, a bevel-pinion fast to said driving-shaft, a slidable clutch 40 splined to said roller -shatt, a pair of bevel-gears loosely mounted upon said roller-shaft, and means supported by said tie for sliding said clutch alternately
- a rotatory carrier-frame means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supporting-frame, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a r0- tatory gear fast to said drivin g-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaf t upon which said supporting-frame is supported, said supporting-frame having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, a tie joining said capboxes to each other, a bevel-pinion fast to said driving-shaft, aslidable clutch 40 spline@ to said roller-shaft., a pair of bevelgears loosely mounted upon said roller-shaft, said clutch having an annular groove,
Description
N0. 676,440. Patented Illne I8, I90I. C. S. MILLS.-
DEVICE FOR ROTATING DRIVING SHAI-'TS 0F LOGOMOTIVES.
(Application led Oct. 4, 1900.)
(No Model.)
V2 Sheets-Sheet I.
A RE l 7J' Af/fm, M74 l l No. 676,440. Patented lune I8, |901. C. S. MILLS.
DEVICE FOR ROTATING DRIVING SHAFTS (-)F LOCOMUTIVES.
Application mea occ. 4, 1900.) (No Model.) 2 Sheets-Sheet 2.
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UNITED STATES PATENT OEETCE.
CHARLES S. MILLS, OF WOLLASTON, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO WILLIAM H. HAMPSON, OF CAMBRIDGE, MASSACHUSETTS.
DEVICE FOR ROTATING DRIVING- SHAFTS OF LOCOMOTIVES.
SPECIFICATION forming part of Letters Patent No. 676,440, dated J' une 18, 1901. Application filed October 4, 1900. Serial No. 32,047. (No model.)
To all whom it may concern:
Be it known that I, CHARLES S. MILLS, a citizen of the United States, residing at Wollaston, in the county of Norfolk and State of Massachusetts, have invented new and use-` ful Improvements in Devices for Rotating Driving-Shafts of Locomotives, of which the following is a specification. l
The object of this invention is to produce a device for transmitting power and particularly for rotating in either direction the driving-shaft of a locomotive-engine while stationary, whereby the valve or other parts of the engine may be adjusted.
The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.
Referring to the drawings, Figure 1 is an end elevation of my improved device for rotating the driving-shaft of a locomotive. Fig. 2 is a sectional elevation taken on line 2 2, Fig. 1. Fig. 3 is a sectional plan taken on line 3 8, Fig. 2. Fig. 4 is a detail section taken on line 4 4, Fig. 2. Fig. 5 is a diagram view representing a side elevation of the main driving-wheel, eccentrics, and valve of a locomotive with my improved device in position thereon. Fig. 6 is a side elevation of a portion of the main supporting frame and box.
Like numerals refer to like parts throughout the several views of the drawings.
In the drawings, Fig. 5, 11 is the main driving-wheel (shown in dotted lines) of a locomotive. 10 10 are the eccentrics; 12 12, the eccentric-rods; 13, the valve-stem, and 14 the valve.
In adjusting the valve the main drivers 11 on each side of the locomotive are first raised from the tracks by four sliding trucks 15 15, having rollers 16 journaled therein. One of the trucks 15 is placed upon the track 17 at each side of the driving-wheels 11, with the peripheries of the rollers 16 touching the periphery of the driver 11. The rollers 16 are fast in pairs to shafts 18, one of each pairbearing against one main driving-wheel, the other of each pair bearing against the other main driving-wheel on the opposite track. The trucks 15 15 on the same track are joined together by the rods 19, screw-threaded to receive nuts 20, and as said nuts are screwed up the trucks 15 are drawn toward each other and the drivers 11 are gradually raised from the track.
To adjust the valves 14 upon opposite sides of the locomotive, the main driving-wheels 11 are rotated by rotating one of the shafts 18 and the rollers 16 fast thereto. The driver is divided by marks upon the periphery into fourequal parts. Said driver is rotated as described until each of the marks thereon comes in line with a stationary mark on the locomotive, when the valve-gear is adjusted until the valve is in the correct position with relation to the steam-ports.
The herein-described device for raising the drivers from the track is old, and as at pres'- ent operated the shaft 18 is rotated by a handlever pivoted upon said shaft and having a pawl pivoted thereto, which engages a ratchet fast to said shaft. This manner of rotating the shaft 18, and thusl rotating the driver, is
slow, laborious, and inaccurate, and it is the object of my invention to perform this worknamely, that of starting, rotating, and stop ping said driver, and thus moving the valve by the valve-gear connected thereto into different positions-in a short time and with accuracy by applying to the said shaftlS a powerful, convenient, and compact device which transmits power to rotate said shaft and can be reversed instantaneously to rotate said shaft in opposite directions.
The device hereinbefore referred to conf sists of a spindle 2l, to which the motive power is applied. Said motive power may be of any type convenient and accessible inthe shop where the device is operated. The spindle 21 is provided with a flange 22, fastened by a screw-threaded portion to a rotary carrier-frame 28. Said carrier-frame has two pinions 24 24, each of the same diameter and number of teeth, journaled upon sleeves 25, said sleeves being rigidly fastened to the carrier-frame 23 by bolts 26. The pinions 24 24 `are in mesh with two gears 27 and 28. 4Said gear 27 has thirty-six teeth and is stationary, being attached by a screw-threaded portion 29 against a shoulder 30 upon the main supporting-frame 3l. The frame 3l has two arms vroo 32 32 thereon, with bearings 33 therein to receive the hubs of the bevel-gears 34 34. One half of the bearings 33 is formed in each of said arms 32. The other half is formed by a cap-box 35, fastened by a bolt 36 to said arms, a tie 37 joining the two cap-boxes to each other. This construction of the frameviz., forming the arms 32 to take one half of the bear-ings 33 and forming the other half of said bearings on cap-boxes 35i-enables the mechanism to be attached to the roller-shaft 18 from one side of said shaft, and this construction is absolutely necessary in a machine of the character herein described for the reason that the mechanism cannot be attached to the shaft by sliding it onto the end thereof, said shaft having rollers attached thereto,
The bevel-gears 34 turn loose upon the shaft 18 and are each provided with a tooth 38, one the reverse of the other and each adapted to engage a recess or space 39 in a clutch member 40. Said clutch member is splined to the shaft 18 and is provided with an annular groove 41, which engages an eccentric-pin 42 upon a rock-shaft 43, which is rocked in a bearing 44 in the tie 37 by a handlever 45. Said hand-lever is limited to a halfrotation by the stops 46, fast to said tie 37.
The gear 28 has two more teeth than the gear 27, and as the gear 27 is stationary7 it will be seen that as the pinions revolve the gear 28 will be rotated two teeth at each rotation of the carrier-frame 23. The gear 28 is fast to a driving-shaft 47, havinga bearing in the main frame 31. Said driving-shafthas a bevel-pinion gear 48 fast thereto and meshes the bevel-gears 34. The carrier-frame 23 rotates upon the driving-shaft 47 as abearing.
The operation of the device as a whole is as follows: Assuming the necessary power to be transmitted to the spindle 21 to rotate the same, the carrier-frame 23 will rotate upon the driving-shaft 47, carrying the pinions 24 with it. Said pinions meshing, the stationary gear 27 will be rotated upon the sleeves 25, and as the number of teeth in the gear 28 differs from the number in the gear 27 said gear 28 will be rotated during one rotation of the carrier-frame an amount proportional to the said difference in teeth, in the presentinstance two teeth. As the gear 28 is fast to the driving-shaft 47, said shaft will be rotated with said gear 28 and the bevel-pinion 48 fastl thereto, thus rotating the shaft 18 through one of the bevel-gears 34 and clutch 40 in one direction when one of said bevel-gears is engaged with said clutch and in the opposite direction when the other bevel-gear is engaged therewith. It will be seen that by turning the hand-lever 45 from one of the stops 46 to the other the mechanism will be reversed through the clutch 40 and bevelgears'34, thus reversing the shaft 18 and, through the rollers 16, the main driving-.Wheel 11. I prefer to run the spindle 2,1 at a speed of about one hundred rotations per minute, and with the relative proportions and numbers of teeth shown in the drawings this would give the driving-shaft 47 about six rotations per minute, thus reducing the speed, and consequently increasing the power for rotating the shafts 18. It is evident that the number of pinion-gears on the carrier-frame might be varied without departing from the spirit of my invention. I have described my invention as particularly adapted to rotating the driving-shafts of locomotives; but it is evident that the combination of gearing therein show-n may be applied to other devices for reducing speed and increasing power Without departing from the spirit of my invention.
Having thus described my invention, what I claim, and desire by Letters Patent to secure, 1s-
1. In a device of the character described, a rotatory carrier-frame, means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear V fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gearv fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller-shaft, and gearing connecting said shafts.
2. In a device of the character described, a rotatory carrier-frame, means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which drivin g-shaft said carrier-frame rotates, a rotatory gear fast to said driving-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller shaft, gearing connecting said shafts, and mechanism for reversing the direction of rotation of said roller-shaft.
3. In a device of the character described, a rotatory carrier-frame, means for rotating said carrier-frame, a pair of pinion gears j ou rnaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrrier-frame rotates, a rotatory gear fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, means for detachably attaching said supporting-frame to said roller-shaft, a pair of bevel-gears loose upon, said roller-shaft, a bevel-pinion fast to said driving-shaft, a slid- IOO II.O
able clutch, 40, splined to said roller-shaft, and means for sliding said clutch alternately into and out of contact with said bevel-gears.
4. In a device otl the character described, a rotatory carrier-frame, means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supportingframe, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gear fast to said drivingshaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which,said supporting -frame is supported, said supportingframe having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, and gearing connecting said shafts.
5. In a device of the character described, a rotate ry carrier-frame, means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a-
stationary gear fast to said supporting-frame, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gear fast to said driving-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, said supporting-frame having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, a tie joining said capboxes to each other, and gearing connecting said shafts.
6. In a device of the character described, a rotatory carrier-frame,means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supporting-frame, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a rotatory gear fast to said driving-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaft upon which said supporting-frame is supported, said supporting-frame having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, a tie joining said capboXes to each other, a bevel-pinion fast to said driving-shaft, a slidable clutch 40 splined to said roller -shatt, a pair of bevel-gears loosely mounted upon said roller-shaft, and means supported by said tie for sliding said clutch alternately into and out of contact with said bevel-gears.
7 In a device of the character described, a rotatory carrier-frame, means for rotating said carrier-frame, a pair of pinion-gears journaled thereon, a main supporting-frame, a stationary gear fast to said supporting-frame, a driving-shaft adapted to rotate in bearings in said supporting-frame and upon which driving-shaft said carrier-frame rotates, a r0- tatory gear fast to said drivin g-shaft, said pinion-gears intermeshing said stationary and rotatory gears, a roller-shaf t upon which said supporting-frame is supported, said supporting-frame having two arms 32, cap-boxes 35 by which said supporting-frame is attached to said roller-shaft, a tie joining said capboxes to each other, a bevel-pinion fast to said driving-shaft, aslidable clutch 40 spline@ to said roller-shaft., a pair of bevelgears loosely mounted upon said roller-shaft, said clutch having an annular groove, a rock-shaft arranged to rock in a bearing in said tie, an eccentric-pin upon said rock-shaft engaging said annular groove, and means for rocking said rook-shaft and sliding said clutch al, ternately into and out of contact with said bevel-gears. Y
In testimony whereof I have hereunto set lmy hand in presence of two subscribing witnesses.
CHARLES S. MILLS.
Witnesses:
CHARLES S. GooDING, SYDNEY E. TAFT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3204700A US676440A (en) | 1900-10-04 | 1900-10-04 | Device for rotating driving-shafts of locomotives. |
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Application Number | Priority Date | Filing Date | Title |
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US3204700A US676440A (en) | 1900-10-04 | 1900-10-04 | Device for rotating driving-shafts of locomotives. |
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US676440A true US676440A (en) | 1901-06-18 |
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US3204700A Expired - Lifetime US676440A (en) | 1900-10-04 | 1900-10-04 | Device for rotating driving-shafts of locomotives. |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2525481A (en) * | 1947-02-05 | 1950-10-10 | Herman D Flora | Reversing transmission for corn picker rolls |
US2830473A (en) * | 1954-11-12 | 1958-04-15 | Genisco Inc | Speed reducing accessory for rate-ofturn test table |
US2953931A (en) * | 1954-08-16 | 1960-09-27 | Musgrave Orly | Power transmission mechanism for lawn mowers |
-
1900
- 1900-10-04 US US3204700A patent/US676440A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2525481A (en) * | 1947-02-05 | 1950-10-10 | Herman D Flora | Reversing transmission for corn picker rolls |
US2953931A (en) * | 1954-08-16 | 1960-09-27 | Musgrave Orly | Power transmission mechanism for lawn mowers |
US2830473A (en) * | 1954-11-12 | 1958-04-15 | Genisco Inc | Speed reducing accessory for rate-ofturn test table |
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