USRE20342E - F macgregor - Google Patents
F macgregor Download PDFInfo
- Publication number
- USRE20342E USRE20342E US20342DE USRE20342E US RE20342 E USRE20342 E US RE20342E US 20342D E US20342D E US 20342DE US RE20342 E USRE20342 E US RE20342E
- Authority
- US
- United States
- Prior art keywords
- pick
- thresher
- vehicle
- grain
- fingers
- 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
Links
- 235000013339 cereals Nutrition 0.000 description 32
- 241000251169 Alopias vulpinus Species 0.000 description 31
- 239000000463 material Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 230000001808 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000005070 ripening Effects 0.000 description 3
- 239000010902 straw Substances 0.000 description 2
- 240000002804 Calluna vulgaris Species 0.000 description 1
- 235000007575 Calluna vulgaris Nutrition 0.000 description 1
- 240000008529 Triticum aestivum Species 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003028 elevating Effects 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 230000000414 obstructive Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000002459 sustained Effects 0.000 description 1
- 235000021307 wheat Nutrition 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/10—Field threshers with windrow pick-up apparatus
Definitions
- Said thresher is mounted upon carrythe grain is avoided, whereas in localities where ing wheels 9, iii, and is adapted to be operated the practice prevails of cutting, binding and by a self-contained motor Ii, or otherwise. shocking the grain, and then hauling it to 3.
- Wheels 9 are connected by a rocking axle l2, sethresher stationed at a distant point, serious loss cured to a bracket i3, by arms or levers ll pivotof grain occurs incident to the various operations ally mounted in said'brackets and fixedly secured stated. In some regions where the combination to said axle, in the manner and for the purpose is used it occurs that the humidity or shown and described in said patent.
- Figure 1 indicates a windrow thresher having driving ears 3
- Fig. 2 a plan of ing sprocket 32. Through said trunnions 29 exthe same;
- Fig. 3 a front elevation of the thresher tends an offset shaft 3! locked against rotation and a hopper used in connection therewith;
- Fig. 8 a detail of controlthe eccentric relation between said fingers and ling mechanism for the thresher; and Fig. 9 a drum they alternately project and recede through detail plan of the supporting member for said said drum during its revolution.
- the pick-up is pick-up. provided with suitable depth gaging means such 55 arrows in Fig. 1; belt 45 preferably running around a countershai't 41.
- the canvas driveroller ll may be driven from any convenient source on the thresher, as the sprocket ,con-
- gear 52 which drives a companion spur-gear on the end of countershaft 41. and on the op site end of said countershaft is a sprocket 54 about which runs a sprocket chain 5!. and connects the same to roller sprocket 32.
- the weight of the thresher is sustained by the rearwardly extending arms I, so that the pick-up is counterbalroller sprocket 56 and drive- C", so that said arm is hingedly connected to the axle I! by the coupling ii the pick-up may be swung away from the thresher, as indicated in Fig. 6, ior convenin making adjustments or repairs.
- the combination machine is so guided that the pick-up will move into the windadvances, the fingers 24 pick up the loose grainladen straws,
- the finger members 25 are preferably made of spring material so that when fingers 24 strike obstructions they will yield and pass thereover.
- the elevator belts ll, 45 coopelji-te to convey the material upwardly and deliver the same from its mouth 11 into the sloping hopper ID, from which it moves by gravity into the feeder-housing 6 of the thresher to be threshed and separated. While thus traveling the gage wheels 3!
- a windrow pick-up means at its forward side for removing cut grain from the soil, a revolving drum positioned rearwardly of and cooperating with said means, fingers in the drum adapted to project and recede in relation thereto for propelling the cut grain, and means for receiving said grain from.the fingers and discharging the same from the pick-up.
- a revolving drum on the pickup fingers within the drum adapted to project and recede therethrough, means for rotating the drum, fingers projecting from the forward end of the pick-up for removing grain from the soil and delivering the grain to the drum, and a conveyer adjacent the drum for receiving the grain therefrom and discharging said grain from the pick-up.
- wheels mounted on the pick-up, a plurality of fingers extending forwardly from the pick-up for removing grain from the soil, adjacent said fingers, revolvable fingers in the drum and actuated thereby to project through said plurality of fingers for moving grain thereover from the forwardly extending fingers and to recede within said drum and disengage from said grain, and means for receiving the grain from said drum and conveying such grain to a thresher.
- a support therefor means for connecting said pick-up thereto, depthgaging means mounted upon said pick-up, a plurality of fingers for removing grain from the soil, a revolving drum beneath said fingers, revolvable fingers in the drum and actuated thereby to project through said plurality of fingers for moving grain thereover and to recede within said drum and disengage from said grain, and means for conveying the grain to a thresher.
- a windrow pick-up comprising a supporting member adjustable toward and away from a thresher, means for pivotally connecting said pick-up to said member whereby the pick-up may be swung backwardly and forwardly in relation to the supporting member, depth-gaging means mounted on said pick-up, stationary fingers on said pick-up projecting forwardly therefrom, a drum on said pick-up having revolving fingers passing between said stationary fingers a revolving drum for removing material rearwardly thereover, and a conveyer adjacent said drum for conveying material from the latter.
- a support comprising stationary fingers positioned forwardly thereof in proximity to the soil, a drum adjacent and rearwardly of said fingers, revolvable fingers in the drum and actuated thereby to move grain over said stationary fingers and to recede within the drum and disengage from the grain, and elevator belts adjacent the drum for receiving grain from the latter and conveying and discharging the same from the pick-up.
- a thresher In a machine of the class described, a thresher, a pick-up, an arm supporting the pickup, means for pivotally connecting the arm to the thresher, and a retaining member connected to the thresher and to said supporting arm whereby the pick-up is maintained in its parallel relation to the thresher.
- a thresher having a rocking axle, a pick-up embodying means for removing material from the ground, an arm on the pick-up in parallel relation to the thresher, and means connecting said arm in the thresher axle whereby when the latter is rocked to raise the thresher the pick-up arm will be simultaneously lowered.
- a vehicle a windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle in such manner that when said pick-up is pushed by said vehicle it shall be free to rock substantially independently of said vehicle about an axis extending generally parallel to, and lengthwise of, the line of vehicle travel
- said interconnecting means including a pushing member afiixed at one of its ends upon said vehicle and mechanically connected to said windrow pick-up at the other end thereof by means including a bearing connection which permits said pick-up to rotate relative to, and independently of, said pushing member.
- windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle, said interconnecting means including an elongated, generally horizontally extending pusher member afiixed at one of its ends to said axle and connected at the other of its ends to said pick-up by means which permits said stantially independently of said vehicle about an axis extending generally parallel to, and lengthwise of, the line of travel of said vehicle.
- a vehicle having an axle, a windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle, said interconnecting means including an elongated. generaly horizontally extending pusher member connected at one of its ends to said axle by a universal coupling and connected at the other of its ends to said pick-up by means including a swivel whereby said pick-up is free to rock substantially independently of said pusher and said vehicle about an axis extending generally parallel to, and lengthwise of, the line of travel of said vehicle.
- a windrow pickup which is adapted to be pushed by said vehicle, said pick-up including a frame normally disposed in a generally upright position, and means for pick-up and mechanically interconnecting said pick-up to rock sub- I per swivel connection intermediate said carrying pendicularly to the line 0! vehicle travel, said inlo upright position and which is adapted to be nected to the frame oi said pick-up, and means l5 so of travel 01' said vehicle. tending generally parallel to, and lengthwise oi,
- said interconnecting means including a said carrying member and the other end of said 40 pusher member supported at one 01' its ends on pusher member.
- said vehicle a carrying member pivotally con- 18.-
- a vehicle having an axle; i n te to said pick-up, and means for connecting a windrow pick-up which is adapted to be pushed the other end oi said carrying member to the by said vehicle; said pick-up including an elonother end of said pusher member. gated, generally rectangularly shaped frame nor- 45 15.
- a vehicle a windrow pickmally disposed in a generally upright position, a up which is adapted to be pushed by said vehicle; conveyor or elevator, and means for removing masaid pick-up including an elongated, gene al y terial from the ground and directing such material a generally upright position, a conveyor or elevasaid pick-up being adapted rest against said 50 directing said material into said conveyor or eleand means for mechanically interconnecting said vator, the upper-end of said pick-up being adapted pick-up and said vehicle in such manner that to rest against said vehicle; roller means at the when said pick-up is pushed by said vehicle it 55 chanically interconnecting said pick-up and said parallel to, and lengthwise oi, the line of vehicle vehicle in such manner that when said pick-up is travel and shall also be free to rock forwardly and pushed by said vehicle it shall be free to rock about backwardly substantially independently of said 60 a generally horizontal axis extending substanvehicle about
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Refuse-Collection Vehicles (AREA)
Description
w. F. M GREGoR COMBINATION THRESHER AND WIN 7 3 9 1. 7 2 n r. p A
DROW PICK-UP 1 u e e h S S e e h S 5 Original Filed Feb. 2'7, 1926 INVENTOR WAIfEf/XVCGZEYYQQ,
BY V,
ATTORNEY April 27, 1937: w, MacGREGOR Re. 20,342
COMBINATION THRESHER AND WINDROW PICK- UP Original Filed Feb. 27, 1926 5 Sheets-Sheet 2 nun lNV ENTOR W1 IKE A" fl 61 560,
BY @K/ ATTORNEY April 27, 1937. w. F. M GREGOR 20,342
COMBINATION THRESHER AND WINDROW PICK-UP Original Filed Feb. 2'7. 1926 5 Sheets-Sheet 3 ]ij.j-
ATTORNEY April 27, 1937. w. F. M cGREGOR Re.-20,342
COMBINATION THRESHER AND WINDROW PICK-UP Original Filed Feb. 27, 1,926 5 Sheets-Sheet 4 Fig. 4.
1 I l I l 1 "WIN ATTORNEY April 27, 1937. w. F. M GREGOR 20,342
I COMBINATION THRESHER AND WINDROW PICK-UP Original Filed Feb. 27, 1926 5 Sheets-Sheet 5 INVENTOR l iz zflrif/zicdefdag ATTORNEY Reissued Apr. 21, 1931 Re. 20342,
UNITED STATES PATENT OFFICE 20,342 COMBINATION Tliiiixsflillt AND WINDROW Wallace F. MacGregor, Racine, Wis., assignor to :1. 1. Case Company, Racine, Wis., a corpora- Original No. 1,919,896, dated July 25, 1933, Serial No. 91,049, February 27, 1926. Application for reissue March 21, 1935, Serial No. 12,304
in Claims. (01. 56-364) Combination harvester-threshers are especial- In said drawings the portions marked indi 1y adapted for use in regions where climatic concate the thresher element of my improved comditions are conducive to the uniform ripening or bination machine, which thresher may be of any maturing of small grain, such as wheat and the desired construction and arrangement, that 5 like, so that the crop may be sufficiently-ripened shown being of the character disclosed in Letand dried to permit of its being cut and threshed ters Patent No. 1,568,679, issued January 5, 1926, at one operation of the combined travelling maupon my application, and which preferably emchinery through the field, which method is recbodies a feeder housing 6, containing a conveyer ognized as highly economical in that not only 1, into the side of which housing grain is conconsiderable time and labor are saved, but mateveyed to the thresher cylinder 8, from which it is 10 rial saving of grain is accomplished for the reapropelled and further separated by suitable son that in this manner of cutting and threshing mechanisms in the machine in a well known frequent handling and consequent shattering of manner. Said thresher is mounted upon carrythe grain is avoided, whereas in localities where ing wheels 9, iii, and is adapted to be operated the practice prevails of cutting, binding and by a self-contained motor Ii, or otherwise. shocking the grain, and then hauling it to 3. Wheels 9 are connected by a rocking axle l2, sethresher stationed at a distant point, serious loss cured to a bracket i3, by arms or levers ll pivotof grain occurs incident to the various operations ally mounted in said'brackets and fixedly secured stated. In some regions where the combination to said axle, in the manner and for the purpose is used it occurs that the humidity or shown and described in said patent. 20 rainfall retards the uniform drying and ripening At the entrance to said feeder housing 6 I poof the standing grain and prevents it from being sition a gravity hopper it having its upper side kept in proper condition in bulk if out and i9 and discharge end 20 open, while its bottom threshed at the same operation, and immediate- 2| comprises an inclined or sloping floor by which ly stored, which is the practice, and, therefore, grain discharged into said hopper will by gravity 25 the use of the harvesterthresher, for the best rebe deposited upon the conveyer l for delivery to suits, is limited to operations in grain suflicientthe cylinder 8; and while I have chosen to illusly matured and dried for immediate storage, so trate and describe such means for conveying that in fields where one or more portions of the grain into the thresher I desire it to be undercrop has not properly matured for cutting and stood that any practical means for the purpose 30 threshing it is quite common to leave those pormay be employed such as an endless conveyer, vi-
tions uncut imtil such ripening occurs, which brating mechanism, blower or otherwise. necessitates the return of the machinery to har- In combination with said thresher 5 I employ vest such remaining grain. It is the object of my a wlndrow gatherer embodying pick-up, conveyinvention' to improve the situation explained by ing or elevating and other mechanisms. Said rendering available some of the advantages and pick-up comprises a suitable frame 23 having economies of the combination harvester method fingers 2| secured to its lower end by the memto crops grown under such climatic conditions, bers 25, which are attached to braces 26 (Fig. 5),
and which may be accomplished in the manner and underneath said fingers I position a drum 40 and by the mechanisms to be described. 21 having heads 28 embodying hollow trunnions 40 In the accompanying drawings, forming par 29 mounted in bearings 30, one of said trunnions hereof, Figure 1 indicates a windrow thresher having driving ears 3|, which clutch with a drivembodying my improvements; Fig. 2 a plan of ing sprocket 32. Through said trunnions 29 exthe same; Fig. 3 a front elevation of the thresher tends an offset shaft 3! locked against rotation and a hopper used in connection therewith; Fig. by pins 35, which said shaft ll constitutes a sta- 45 4 a plan of certain details of the windrow picktionary crankshaft having the portion thereof up forming part of my improved machine; Fig. 5 intermediate its ends, as 38, eccentric to said a fragmentary section of the pick-up; Fig. 6 a drum, and upon which shaft is mounted, in colfront elevation of the thresher showing said picklars 31, a plurality of fingers 38 adapted to re- .10 up swung away therefrom; Fig. 7 a detail of the volve about said shaft as they are propelled lower portion of said pick-up showing driving around by the rotating drum 21, and because of connections therefor; Fig. 8 a detail of controlthe eccentric relation between said fingers and ling mechanism for the thresher; and Fig. 9 a drum they alternately project and recede through detail plan of the supporting member for said said drum during its revolution. The pick-up is pick-up. provided with suitable depth gaging means such 55 arrows in Fig. 1; belt 45 preferably running around a countershai't 41. The canvas driveroller ll may be driven from any convenient source on the thresher, as the sprocket ,con-
ing engaging the grain will travel same direction, as indicated by the arrows in Fig. 1.
To the axle I2 I rotatably mount a pair of carrying arms 68, which may be secured thereto sleeve 6| mounted on shank 65, pivotally connected at I to each side of the pickup, and connected by a brace arm 60 is in efl'ect a bifurcated to support the pick-up from the thresher, the pick-up, being plvotally supported thereby is free to By this means the elevator portion of the pick-up is not only permitted to move upwardly and downwardters.
As hereinbei'ore indicated. the weight of the thresher is sustained by the rearwardly extending arms I, so that the pick-up is counterbalroller sprocket 56 and drive- C", so that said arm is hingedly connected to the axle I! by the coupling ii the pick-up may be swung away from the thresher, as indicated in Fig. 6, ior convenin making adjustments or repairs.
In the circumstances hereinbei'ore described. where the grain is tion harvester-thresher in place of the harvester or header element thereof, so
tieed with a combination harvester-thresher.
In operation, the combination machine is so guided that the pick-up will move into the windadvances, the fingers 24 pick up the loose grainladen straws,
which move along over the group urged toward the elevator portion of the pick-up by the revolving fingers 38 to the canvas belt 45 receding within the drum wn in Fig. 5, which drum, as
indicated by the arrow rotates in a direction opposite to that of the depth gage wheels 39. The finger members 25 are preferably made of spring material so that when fingers 24 strike obstructions they will yield and pass thereover. During such movement of the straw the elevator belts ll, 45, coopelji-te to convey the material upwardly and deliver the same from its mouth 11 into the sloping hopper ID, from which it moves by gravity into the feeder-housing 6 of the thresher to be threshed and separated. While thus traveling the gage wheels 3! follow the ground inequalities and thus maintain the fingers 24 in proper relation to the soil, and, as the pick-up is pivotally mounted upon its supporting arm, which latter is linked to the thresher as stated, it is enabled to follow the movement of the thresher without strain, and by which means in connection with the variable coupling between said arm and the thresher I provide stable but yielding connections between the thresher and pick-up elements of the combination machine.
I claim as my invention:
1. In a windrow pick-up, means at its forward side for removing cut grain from the soil, a revolving drum positioned rearwardly of and cooperating with said means, fingers in the drum adapted to project and recede in relation thereto for propelling the cut grain, and means for receiving said grain from.the fingers and discharging the same from the pick-up.
2. In a windrow pick-up, flexible means secured thereto and connecting the pick-up to a threshing machine, a revolving drum on the pickup, fingers within the drum adapted to project and recede therethrough, means for rotating the drum, fingers projecting from the forward end of the pick-up for removing grain from the soil and delivering the grain to the drum, and a conveyer adjacent the drum for receiving the grain therefrom and discharging said grain from the pick-up.
3. In a windrow pick-up, a support therefor,
, means for connecting the pick-up to the support,
wheels mounted on the pick-up, a plurality of fingers extending forwardly from the pick-up for removing grain from the soil, adjacent said fingers, revolvable fingers in the drum and actuated thereby to project through said plurality of fingers for moving grain thereover from the forwardly extending fingers and to recede within said drum and disengage from said grain, and means for receiving the grain from said drum and conveying such grain to a thresher.
4. In a windrow pick-up, a support therefor, means for connecting said pick-up thereto, depthgaging means mounted upon said pick-up, a plurality of fingers for removing grain from the soil, a revolving drum beneath said fingers, revolvable fingers in the drum and actuated thereby to project through said plurality of fingers for moving grain thereover and to recede within said drum and disengage from said grain, and means for conveying the grain to a thresher.
5. A windrow pick-up comprising a supporting member adjustable toward and away from a thresher, means for pivotally connecting said pick-up to said member whereby the pick-up may be swung backwardly and forwardly in relation to the supporting member, depth-gaging means mounted on said pick-up, stationary fingers on said pick-up projecting forwardly therefrom, a drum on said pick-up having revolving fingers passing between said stationary fingers a revolving drum for removing material rearwardly thereover, and a conveyer adjacent said drum for conveying material from the latter.
6. In a machine of the character described, a support, a pick-up rockingly mounted on said support comprising stationary fingers positioned forwardly thereof in proximity to the soil, a drum adjacent and rearwardly of said fingers, revolvable fingers in the drum and actuated thereby to move grain over said stationary fingers and to recede within the drum and disengage from the grain, and elevator belts adjacent the drum for receiving grain from the latter and conveying and discharging the same from the pick-up.
'1. In a machine of the class described, a thresher, a pick-up, an arm supporting the pickup, means for pivotally connecting the arm to the thresher, and a retaining member connected to the thresher and to said supporting arm whereby the pick-up is maintained in its parallel relation to the thresher.
8. In a machine of the class described, a thresher having a rocking axle, a pick-up embodying means for removing material from the ground, an arm on the pick-up in parallel relation to the thresher, and means connecting said arm in the thresher axle whereby when the latter is rocked to raise the thresher the pick-up arm will be simultaneously lowered.
9. In combination, a vehicle, a windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle in such manner that when said pick-up is pushed by said vehicle it shall be free to rock substantially independently of said vehicle about an axis extending generally parallel to, and lengthwise of, the line of vehicle travel, said interconnecting means including a pushing member afiixed at one of its ends upon said vehicle and mechanically connected to said windrow pick-up at the other end thereof by means including a bearing connection which permits said pick-up to rotate relative to, and independently of, said pushing member.
10. In combination, a vehicle having an axle, a
windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle, said interconnecting means including an elongated, generally horizontally extending pusher member afiixed at one of its ends to said axle and connected at the other of its ends to said pick-up by means which permits said stantially independently of said vehicle about an axis extending generally parallel to, and lengthwise of, the line of travel of said vehicle.
11. In combination, a vehicle having an axle, a windrow pick-up which is adapted to be pushed by said vehicle, and means for mechanically interconnecting said pick-up and said vehicle, said interconnecting means including an elongated. generaly horizontally extending pusher member connected at one of its ends to said axle by a universal coupling and connected at the other of its ends to said pick-up by means including a swivel whereby said pick-up is free to rock substantially independently of said pusher and said vehicle about an axis extending generally parallel to, and lengthwise of, the line of travel of said vehicle.
12. In combination, a vehicle, a windrow pickup which is adapted to be pushed by said vehicle, said pick-up including a frame normally disposed in a generally upright position, and means for pick-up and mechanically interconnecting said pick-up to rock sub- I per swivel connection intermediate said carrying pendicularly to the line 0! vehicle travel, said inlo upright position and which is adapted to be nected to the frame oi said pick-up, and means l5 so of travel 01' said vehicle. tending generally parallel to, and lengthwise oi,
o hicle, said interconnecting means including a said carrying member and the other end of said 40 pusher member supported at one 01' its ends on pusher member. said vehicle, a carrying member pivotally con- 18.- In combination; a vehicle having an axle; i n te to said pick-up, and means for connecting a windrow pick-up which is adapted to be pushed the other end oi said carrying member to the by said vehicle; said pick-up including an elonother end of said pusher member. gated, generally rectangularly shaped frame nor- 45 15. In combimtion: a vehicle; a windrow pickmally disposed in a generally upright position, a up which is adapted to be pushed by said vehicle; conveyor or elevator, and means for removing masaid pick-up including an elongated, gene al y terial from the ground and directing such material a generally upright position, a conveyor or elevasaid pick-up being adapted rest against said 50 directing said material into said conveyor or eleand means for mechanically interconnecting said vator, the upper-end of said pick-up being adapted pick-up and said vehicle in such manner that to rest against said vehicle; roller means at the when said pick-up is pushed by said vehicle it 55 chanically interconnecting said pick-up and said parallel to, and lengthwise oi, the line of vehicle vehicle in such manner that when said pick-up is travel and shall also be free to rock forwardly and pushed by said vehicle it shall be free to rock about backwardly substantially independently of said 60 a generally horizontal axis extending substanvehicle about a generally horizontal axis artially perpendicularly to the line of vehicle travel; ranged substantially perpendicularly to the line 55 amxed at one of its ends to said vehicle, a biiurgated pusher member connected at one of its ends pusher member. necting the other end of said carrying member to 70 16. In combination, a vehicle having an axle, a the other end of said pusher member. windrow pick-up which is, adapted to be pushed by said vehicle, said pick-up including a frame WALLACE F. MACGREGOR.
Publications (1)
Publication Number | Publication Date |
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USRE20342E true USRE20342E (en) | 1937-04-27 |
Family
ID=2085188
Family Applications (1)
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US20342D Expired USRE20342E (en) | F macgregor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2413869A1 (en) * | 1978-01-06 | 1979-08-03 | Kuhn Sa | Clearing mechanism for haymaking machine - has rotary toothed discs at inner ends of pick=up teeth |
-
0
- US US20342D patent/USRE20342E/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2413869A1 (en) * | 1978-01-06 | 1979-08-03 | Kuhn Sa | Clearing mechanism for haymaking machine - has rotary toothed discs at inner ends of pick=up teeth |
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