US1206200A - Mechanism for converting rotary into reciprocatory motion. - Google Patents
Mechanism for converting rotary into reciprocatory motion. Download PDFInfo
- Publication number
- US1206200A US1206200A US8316216A US8316216A US1206200A US 1206200 A US1206200 A US 1206200A US 8316216 A US8316216 A US 8316216A US 8316216 A US8316216 A US 8316216A US 1206200 A US1206200 A US 1206200A
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- Prior art keywords
- rack
- shaft
- pinion
- carriage
- lever
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18088—Rack and pinion type
- Y10T74/18104—Shiftable pinion
Definitions
- This invention relates to improvements in mechanism for converting rotary into reciprocatory motion and more particularly to the reversing means therefor.
- the object of the invention is to provide a simply constructed and efficient mechanism for converting rotary into reciprocatory motion.
- Another object is to provide mechanism of this character in which the rotating element is laterally movable to position it in engagement alternately with opposite faces of the member to be reciprocated.
- FIG. 1 represents a plan view of an apparatus constructed in accordance with this invention
- Fig. 2 is a longitudinal section thereof taken on the line 2-2 of Fig. 1
- Fig. 3 is an enlarged detail plan view showing the reciprocating carriage during its stroke in one direction with the pinion of the rotary member engaged with the lower face ofthe rack of said carriage
- Fig. 4 is a similar view with the carriage shown substantially at the p the right with the rack shown passing ofi the pinion and the pinion limiting means shown ready for raising the pinion into position for engaging the upper face of the rack
- Fig. 6 is a longitudinal section taken on the line 6 -6 of Fig. '1;
- Fig. 7 is a transverse section taken on the line '7-7v of Fig. 3;
- Fig. 8 is an enlarged transverse section taken on the teeth on the upper line 8.8 of Fig. and
- Fig. 9 is n11 emerged longitudinal section taken on the line 9-9 of Fig. 3.
- a supportlng structure comprising longitudinally extending laterally spaced beams 1 and 2 connected at intervals by transverse bars 3, any desired number of which maybe employed, two being here shown secured to the upper edges of the beams 1 and 2 and an engine bed 1 disposed at one end and on which a driving engine (not shown) s designed to be mounted.
- a cross beam'5 18 secured between the opposed inner faces of the beams 1 and 2 at a point intermediate of their ends and is disposed with its up per face arranged below the upper faces of said beams.
- a carriage supporting member 6 which 18 preferably constructed in the form of an I-beam which is bolted to the beams with the lateral flanges 7 and 8 thereof forming guides for a reciprocating carriage 19 to be. described.
- bufiers 9 and 10 Arranged at opposite ends of the carriage supporting member 6 are bufiers 9 and 10 which are designed for minimizing shock and to assist the reversal of the reciprocating carriage. These bufiers are arranged longitudinally of the member 6 and are exactly alike in construction, each comprising a shank 11 having heads 12 and 13 at its opposite ends. This shank 11 is mounted to slide in a loop-shaped support 14 extendingupwardly from the end of the member 6, the side members of the supporting loop 14: being provided with registering apertures 15 to receive the shank 11 of the buffer and permit it'to slide longitudinally therein and to hold it against wabbling.
- a coiled spring 16 is arranged on the shank llbetween the inner head 12 thereof and-the in nor face of the loop lt and exerts its tension to normally project the head 12 inward and to form-a cushion for said head when the bufie'r is retracted.
- These supporting loops 1 1 are preferably provided at their lower ends withlaterally extending arms 17 which-are designed to pass under themem-V her 6 and to be secured thereto by suitable fastening elements 18.
- V Mounted to slide on the memberG is the" carriage 19 having intur'ned clamping fingers or arms 20, on opposite sides thereof at it app site ends which ex nd under the flanges 7 and 8 of the supporting member 6 to provide for the reciprocatory movement of said carriage on said member.
- a rack 21 extends laterally from one side edge of the carriage 19 and is preferably of a length corresponding to the length of the carriage and is provided on its upper and lower faces with teeth 22 here shown formed by providing longitudinally arranged spaced apertures 23 positioned a proper distance apart to receive the teeth or spurs 24 of a pinion 25 which isdeslgned to engage said rack for reciprocat ng the carriage as will be hereinafter more fully described.
- a standard 26 rises from the carriage 19 intermediately of the ends thereof, prefer able midway of said ends and is designed to be engaged by an element (not shown) to be operated by the carriage.
- a brace bar 27 is secured at its opposite ends to the opposite ends of the carriage 19 and extends over and is fixed to the upper end of the standard 26, whereby the carriage and standard are strengthened and braced.
- a stop 28 projects upwardly from the rack 21 at a point intermediate of the ends of said rack, preferably about midway of said ends and is designed for engagement by a trip lever or dog 29 to be described.
- a shaft 30 is arranged longitudinally on the supporting structure above described and is composed of two sections, the rear section 31 of which is mounted to rotate in suitable bearings 32 and 33 carried by the rear cross bars 3,1the front end of said section having a stop collar 34 spaced inwardly from itsterminal and adapted to engage the rear face of the bearing 33 for limiting the forward movement of said 7 shaft which is held against rearward movement by a bifurcated head 35 which engages the opposite face of said bearing and forms one member of a universal joint which connects saidrear shaft section 31 with the front shaft section 36.
- the front section 36 of the shaft 30 is provided at its rear end with a universal joint member 3?
- the front end of the shaft section 36 carries the pinion 25 which is fixed thereto by any suitable means.
- This shaftsection 36 is revolubiy mounted in a bearing block 39 which is mounted for verticalmovement in a guide 40' which rises from the cross bar ,5 at; a 7 po nt midway the length thereof.
- This guide 40 is shown in the form of an 46 which extend from the opposite sides of the top or cross bar thereof and are secured e at their terminals to the cross bar 5 of the supporting structure near the opposite ends of said bar.
- the rear end of the shaft section 31 is provided with a clutch member 31 for connecting the shaft 30 with the driving shaft of the engine (not shown) and by means of which said shaft 30 may be thrown into and out of operation at the will of the operator, a lever 47 being here shown for actuating said clutch in the usual manner.
- the rack 21 pinion25 and buffers 9 and 10 are so'positioned and proportioned that the pinion 25 will pass off one end of the rack 21 when the carriage is moved to its extreme limit in the direction of the arrow (4 and W111 ride up on the opposite end of said rack when the carriage reaches its extreme limit in the opposite direction as shown by the arrow 6, the mounting of said shaft end in the vertically movable block 39 providing for this movement relative to the rack 21, the shaft rotating continuously in the direction of the arrow 0.
- This 3 guide 40 is shown braced by suitable braces toward the right as indicated by the arrow at V in the.
- This 3 guide 40 is shown braced by suitable braces toward the right as indicated by the arrow at V in the.
- This 3 guide 40 comprises an hshaped lever 48 pivotally connected at one end with an apertured lug 49 projecting upwardly from the cross bar 5 between the guide 40 and the side beam 1.
- the arm 50- of this lever which is so connected extends 7 under the shaft section 36 between the pinion 25 and the bearing block 39 and is designed to engage said shaft section for lifting it as will be presently described;
- the other arm 51 of this L-shaped lever 48 pro jects upwardly on the side of the shaft opposite to that on which the other arm is con-L V nected' and has a link-'52 connected with its free. end.
- a coiled spring 53 connects the free end of the link'52 with the free end of the trip dog 29 and exerts its tension to normally hold the lever arm 50 in engagement with shaft section 36 and to pull said dog 29 inwardly into engagement with a stop 54 shown in the form of a pin rising from the cross bar 5 adjacent the beam 1.
- the free end of the trip dog 29 is positioned in the path of the sto 28 carried by the rack 21 so that when the rack has traveled toward the right in the direction of arrow a a predetermined distance, the stop 28 engages the dog 29 and forces it outward against the tension of spring53, thereby exerting a lifting action on the lever 48 through its long arm 50 which engages the under portion of the shaft section 36and therebv lifts said pinion 25 carried thereby, causing it to ride upwardlv over the left-hand end of the rack 21 when the carriage reaches the extreme limit of its movement toward the right, thereby elevating said pinion into engagement with the upper face of the rack.
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Description
D. J. BONTRAGER.
MECHANISM FOR CONVERTING ROTARY INTO RECIPROCATORY MOTION.
APPLICATION FILED MAR-9.19%.
Patented Nov. 28, 1916.
3 SHEET$-SHEET l "l/Winsome (J Mme Mica )3. 5;. oM mgw 0.1. BONTRAGER. MECHANISM FOR CONVERTING ROTARY INTO RECIPROCATORY MOTION.
APPLICATION FILED MAR. 9. I9I6- 3 SHEETS-SHEET 2.
Patented Nov. 28, 1916'.
. 5 f V I a j LnS35E53uuuuuuuu gwnfiwmwwmmmu mun/n H l. 4 J T D. J. BONTRAGER.
MECHANISM FOR CONVERTING ROTARY lNTO RECIPROCATORY MOTION.
APPLICATION FILED MAR. 9, I916 1 ,206,200. Patented N0v..28, 1916.
3 SHEETSSHEET.3.
4/ @7 5i 1i v 'lll li DANIEL J. BONTRAGER, OF WOODBUBN, OREGON.
MECHANISM FOR. CONVERTING ROTARY INTO RECIPROGATORY MOTION.
Specification of Letters Patent. Patented N 28 1916 Application filed March 9, 1916. Serial No. 83,162.
. To all whom it may concern Be it known that I, DANIEL J. BONTRAGER, a citizen of the United States, residing at lVoodburn, in the county of Marion and State of Oregon, have invented certain new and useful Improvements in Mechanism for Converting Rotary into Reciprocatory Motion; and I do declare the following to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in mechanism for converting rotary into reciprocatory motion and more particularly to the reversing means therefor.
The object of the invention is to provide a simply constructed and efficient mechanism for converting rotary into reciprocatory motion.
Another object is to provide mechanism of this character in which the rotating element is laterally movable to position it in engagement alternately with opposite faces of the member to be reciprocated. I
lVith these and other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.
In the accompanying draivingsFigure 1 represents a plan view of an apparatus constructed in accordance with this invention; Fig. 2 is a longitudinal section thereof taken on the line 2-2 of Fig. 1; Fig. 3 is an enlarged detail plan view showing the reciprocating carriage during its stroke in one direction with the pinion of the rotary member engaged with the lower face ofthe rack of said carriage; Fig. 4 is a similar view with the carriage shown substantially at the p the right with the rack shown passing ofi the pinion and the pinion limiting means shown ready for raising the pinion into position for engaging the upper face of the rack, Fig. 5 18' a simllar view showing the carriage 'movlng 1n the opposite direction with the pinion pos end of its stroke toward tioned above the rack and'engaging the face thereof; Fig. 6 is a longitudinal section taken on the line 6 -6 of Fig. '1; Fig. 7 is a transverse section taken on the line '7-7v of Fig. 3; Fig. 8 is an enlarged transverse section taken on the teeth on the upper line 8.8 of Fig. and Fig. 9 is n11 emerged longitudinal section taken on the line 9-9 of Fig. 3.
In the embodiment illustrated, a supportlng structure is shown comprising longitudinally extending laterally spaced beams 1 and 2 connected at intervals by transverse bars 3, any desired number of which maybe employed, two being here shown secured to the upper edges of the beams 1 and 2 and an engine bed 1 disposed at one end and on which a driving engine (not shown) s designed to be mounted. A cross beam'5 18 secured between the opposed inner faces of the beams 1 and 2 at a point intermediate of their ends and is disposed with its up per face arranged below the upper faces of said beams.
Extending across the beams 1 and 2 in advance of the cross bar 5 is a carriage supporting member 6 which 18 preferably constructed in the form of an I-beam which is bolted to the beams with the lateral flanges 7 and 8 thereof forming guides for a reciprocating carriage 19 to be. described.
Arranged at opposite ends of the carriage supporting member 6 are bufiers 9 and 10 which are designed for minimizing shock and to assist the reversal of the reciprocating carriage. These bufiers are arranged longitudinally of the member 6 and are exactly alike in construction, each comprising a shank 11 having heads 12 and 13 at its opposite ends. This shank 11 is mounted to slide in a loop-shaped support 14 extendingupwardly from the end of the member 6, the side members of the supporting loop 14: being provided with registering apertures 15 to receive the shank 11 of the buffer and permit it'to slide longitudinally therein and to hold it against wabbling. A coiled spring 16 is arranged on the shank llbetween the inner head 12 thereof and-the in nor face of the loop lt and exerts its tension to normally project the head 12 inward and to form-a cushion for said head when the bufie'r is retracted. These supporting loops 1 1 are preferably provided at their lower ends withlaterally extending arms 17 which-are designed to pass under themem-V her 6 and to be secured thereto by suitable fastening elements 18. V Mounted to slide on the memberG is the" carriage 19 having intur'ned clamping fingers or arms 20, on opposite sides thereof at it app site ends which ex nd under the flanges 7 and 8 of the supporting member 6 to provide for the reciprocatory movement of said carriage on said member.
A rack 21 extends laterally from one side edge of the carriage 19 and is preferably of a length corresponding to the length of the carriage and is provided on its upper and lower faces with teeth 22 here shown formed by providing longitudinally arranged spaced apertures 23 positioned a proper distance apart to receive the teeth or spurs 24 of a pinion 25 which isdeslgned to engage said rack for reciprocat ng the carriage as will be hereinafter more fully described.
A standard 26 rises from the carriage 19 intermediately of the ends thereof, prefer able midway of said ends and is designed to be engaged by an element (not shown) to be operated by the carriage. A brace bar 27 is secured at its opposite ends to the opposite ends of the carriage 19 and extends over and is fixed to the upper end of the standard 26, whereby the carriage and standard are strengthened and braced.
A stop 28 projects upwardly from the rack 21 at a point intermediate of the ends of said rack, preferably about midway of said ends and is designed for engagement by a trip lever or dog 29 to be described.
A shaft 30 is arranged longitudinally on the supporting structure above described and is composed of two sections, the rear section 31 of which is mounted to rotate in suitable bearings 32 and 33 carried by the rear cross bars 3,1the front end of said section having a stop collar 34 spaced inwardly from itsterminal and adapted to engage the rear face of the bearing 33 for limiting the forward movement of said 7 shaft which is held against rearward movement by a bifurcated head 35 which engages the opposite face of said bearing and forms one member of a universal joint which connects saidrear shaft section 31 with the front shaft section 36. The front section 36 of the shaft 30 is provided at its rear end with a universal joint member 3? open atively connected with the member 35 of the rear section 31 and as shown is in the form of a bifurcated head with'the furcations thereof arranged between the furcations of the head 35 and pivotally engaged I with a block 38 arranged between'the'furcations of the two heads and with which said heads are pivotally connected in planes at right angles to each other.
:The front end of the shaft section 36 carries the pinion 25 which is fixed thereto by any suitable means. This shaftsection 36 is revolubiy mounted in a bearing block 39 which is mounted for verticalmovement in a guide 40' which rises from the cross bar ,5 at; a 7 po nt midway the length thereof.
This guide 40 is shown in the form of an 46 which extend from the opposite sides of the top or cross bar thereof and are secured e at their terminals to the cross bar 5 of the supporting structure near the opposite ends of said bar. I
The rear end of the shaft section 31 is provided with a clutch member 31 for connecting the shaft 30 with the driving shaft of the engine (not shown) and by means of which said shaft 30 may be thrown into and out of operation at the will of the operator, a lever 47 being here shown for actuating said clutch in the usual manner.
By mounting the front end of the shaft section 36 which carries the pinion 25 in the vertically movable block 39, it will be obvious that said pinion may be raised and lowered to position it either in engagement with the upper or lower face of the rack 21 to provide for the reversal of the motion of the carriage carrying said rack.
The rack 21 pinion25 and buffers 9 and 10 are so'positioned and proportioned that the pinion 25 will pass off one end of the rack 21 when the carriage is moved to its extreme limit in the direction of the arrow (4 and W111 ride up on the opposite end of said rack when the carriage reaches its extreme limit in the opposite direction as shown by the arrow 6, the mounting of said shaft end in the vertically movable block 39 providing for this movement relative to the rack 21, the shaft rotating continuously in the direction of the arrow 0.
Automatic means for raising the pinion 25 whenthe rack reaches its extreme limit This 3 guide 40 is shown braced by suitable braces toward the right as indicated by the arrow at V in the. preferred embodiment, comprises an hshaped lever 48 pivotally connected at one end with an apertured lug 49 projecting upwardly from the cross bar 5 between the guide 40 and the side beam 1. The arm 50- of this lever which is so connected extends 7 under the shaft section 36 between the pinion 25 and the bearing block 39 and is designed to engage said shaft section for lifting it as will be presently described; The other arm 51 of this L-shaped lever 48 pro jects upwardly on the side of the shaft opposite to that on which the other arm is con-L V nected' and has a link-'52 connected with its free. end. A coiled spring 53 connects the free end of the link'52 with the free end of the trip dog 29 and exerts its tension to normally hold the lever arm 50 in engagement with shaft section 36 and to pull said dog 29 inwardly into engagement with a stop 54 shown in the form of a pin rising from the cross bar 5 adjacent the beam 1.
The free end of the trip dog 29 is positioned in the path of the sto 28 carried by the rack 21 so that when the rack has traveled toward the right in the direction of arrow a a predetermined distance, the stop 28 engages the dog 29 and forces it outward against the tension of spring53, thereby exerting a lifting action on the lever 48 through its long arm 50 which engages the under portion of the shaft section 36and therebv lifts said pinion 25 carried thereby, causing it to ride upwardlv over the left-hand end of the rack 21 when the carriage reaches the extreme limit of its movement toward the right, thereby elevating said pinion into engagement with the upper face of the rack. The continued rotation of the oinion then reverses the movement of the rack and the carriage connected therewith, moving it toward the left until it reaches its extreme limit in this direction and when it has reached this limit, the pinion 25 will be positioned at the right-hand end of said rack and will drop off said end and by the weight of the block 39 pass into its extreme lowered position for engagement with the lower face of the rack 21. The continued rotation of said pinion will then reverse the movement of the rack and the carriage carried thereby moving it in the opposite direction.
It will thus be understood that the continuous rotation of the shaft 30 will by the alternate raising and lowering of the pinion carried bv the front end thereof into engagement with the teeth on the opposite faces of the rack 21 reciprocate the carriage l9 and by means of which reciprocatory motion may be imparted to any machine or object connected therewith.
In view of the above description, it is thought that the operation of the various parts of this apparatus will be fully understood without describing the operation in detail, it being obvious that the continued rotation of the shaft 30 through the engagement of the pinion 25 with first one face and then the other of the rack 21 will reciprocate said rack, thus converting the rotary motion of the shaft 30 into a reciprocatorv motion which is imparted to the carriage 19.
I claim:
1. The combination of a continuously rotating shaft one end of which is mounted for vertical movement, a pinion carried by said shaft end, a member mounted to reciprocate in a plane at right angles to the plane of the shaft section and the longitudinal axis of said shaft, a rack carried by said member and having teeth on its upper and lower faces positioned for engagement by said pinion and means for positively raising said pinion at the end of r ture, a reciprocatory member mounted thereon and having a longitudinally extending 'rack with teeth on both faces, a rotatable shaft extending at right angles to said reciprocatory member, a pinion carried by said shaft, a movable bearinoblock in which the pinion carrying shaft is revolubly mounted to adapt the plnion to move to position it alternately for engaging the teeth on opposite faces of'said rack, a su'onort'for said block having oppositely disposed guides, cooperating elements on said block engaging said guides, means at-the' ends of said guides for limiting the movement of said block in opposite directions, said block moving by gravity in one direction, and means controlled by said rack for moving it in the other direction.
4c. The combination of a supporting structure, a reciprocatory member mounted there-v on and having a longitudinally extending 'a lever connected with said member onthe opposed side of said shaft, and a cooperatin'g element on said rack for engaging said lever at a predetermined point during the movement of said rack in one direction, whereby said lever is operated to bring said pinion moving member into engagement with said shaft for moving said shaft and lifting the pinion into engagement with the teeth on the other face of said rack when said rack reaches its limit of movement in one direction.
5-. The combination of a supporting structure, a reciprocatory member mounted thereon and having a longitudinally extending rack with teeth on both faces, a rotatable shaft extending at right angles to said reciprocatory member, a pinion carried by said shaft, a movable bearing block in which the pinion carrying shaft is revolubly mounted to adapt the pinion'to move to position it alternately for engaging the teeth on opposite faces of said rack, an inverted U-shaped block-support mounted on said structure, the arms of said support having longitudinally extending slots therein, projections on said block extending into said slots whereby the block is guided and its movement limited in opposite directions, said block being movable by gravity in one direction, and means controlled by said reciprocatory member for moving it in the opposite direction.
6. The combination of a supporting structure, a reciprocatory member mounted thereon and having a longitudinally extending rack with teeth on both faces, a rotatable shaft extending at right angles to' said reoiprocatory member, a pinion carried by said shaft and mounted to move laterally toward and away from said rack, an L- shaped member pivotally mounted at one end on said supporting structure and extending transversely under said shaft adjacent said pinion, a lever fulcrumed at one end on said structure adjacent the pivoted end of said L'-shaped member, a coiled spring between said lever and the free end of said L-shaped member, the free end of said lever extending in the path of said rack, and a stop on said rack for engaging said lever at, a predetermined point during the movement of the rack in one direction,
whereby the lever is moved against the ten-' sion of said spring and said L-shaped member engaged with said shaft for moving the pinion to position it for engagement with the opposed rack face when said rack reaches the limit of its movement.
7. The combination of a supporting structure, a reciprocatory member mounted thereon and having a longitudinally extending rack with teeth on both faces, a rotatable shaft extending at right angles to said reciprocatory member, a pinion carried by said shaft and mounted to move laterally toward and away from said rack, an L shaped member pivotally mounted at one end on said supporting structure and extending transversely under said shaft adjacent said pinion, a lever fulcrumed at one end on said structure adjacent the pivoted end of said L-shaped member, a connection between said lever and the free end of said L-shaped member, including a coiled spring, the free end of said lever extending in the path of said rack, and a stop on said rack for engaging said lever ata predetermined point during the movement of the rack in one direction, whereby the lever is moved against the tension of said spring and said L-shaped member engaged with said shaft for moving the pinion to position it for en gagement with the opposed rack face when said rack reaches the limit of its movement, resilient buffers-for limiting the movement of said member in opposite directions, said buffers being so positioned as to alternately engage the ends of said member when the ends of the rack pass out of engagement with said pinion to provide for the alternate engagement of said pinion with opposite faces of said rack.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
DANIEL J. BONTRAGER. Vitnesses:
A. W. BONTRAGER, V H. M. AJUSTIN.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8316216A US1206200A (en) | 1916-03-09 | 1916-03-09 | Mechanism for converting rotary into reciprocatory motion. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US8316216A US1206200A (en) | 1916-03-09 | 1916-03-09 | Mechanism for converting rotary into reciprocatory motion. |
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US1206200A true US1206200A (en) | 1916-11-28 |
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US8316216A Expired - Lifetime US1206200A (en) | 1916-03-09 | 1916-03-09 | Mechanism for converting rotary into reciprocatory motion. |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547568A (en) * | 1945-09-22 | 1951-04-03 | Dewitt Charles Clifford | Offset tiller operated by tractor power take-off |
-
1916
- 1916-03-09 US US8316216A patent/US1206200A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547568A (en) * | 1945-09-22 | 1951-04-03 | Dewitt Charles Clifford | Offset tiller operated by tractor power take-off |
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