US21533A - Improvement in guard-fingers for harvesters - Google Patents
Improvement in guard-fingers for harvesters Download PDFInfo
- Publication number
- US21533A US21533A US21533DA US21533A US 21533 A US21533 A US 21533A US 21533D A US21533D A US 21533DA US 21533 A US21533 A US 21533A
- Authority
- US
- United States
- Prior art keywords
- finger
- fingers
- guard
- cap
- harvesters
- 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
Links
- 241001124569 Lycaenidae Species 0.000 title description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 14
- 229910001018 Cast iron Inorganic materials 0.000 description 12
- 229910000754 Wrought iron Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 229910001296 Malleable iron Inorganic materials 0.000 description 6
- 240000000218 Cannabis sativa Species 0.000 description 2
- 206010010254 Concussion Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/02—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having reciprocating cutters
- A01D34/13—Cutting apparatus
- A01D34/18—Guard fingers; Ledger-plates
Definitions
- Fig. 4 a plan of the finger with the cap removed.
- the object ofmy improvement is to provide a guard-finger at a cheap rate that will possess all the requisite qualities for resisting the various forces brought to bear upon it, and that will not be subject to be choked or clogged up; and its nature consists in forming the finger in two parts of different kinds of the the same metal, (wrought and cast iron,) in a manner to be hereinafter described, so that the strength of the different metals will be brought to bear in the direction that each, from its peculiar nature, will be best adapted to resist, and so that the cheapest metal will form the larger and heavier portion of the finger, by means of which the cost of the finger is materially reduced, as well because of the difference in cost of materials as in the cost of the v manufacture of that part of the finger.
- the finger as delineated in the drawings, coir sists of two principal parts, the base A and cap-piece B, the front end of the former of which is beveled off at the sides, and a counternotch, a, as it were, formed on the under side of the point cl of the cap, into which the point 1 of the base fits.
- a notch, b of such size and shape as to receive the rear end of the cap-piece A.
- This end is somewhat elongated in a horizontal direction, so that when fitted in the notch 12 and the finger secured to its bar it shall be confined in that position by being compressed between the two.
- the rear part of the cap B, immediately over the sickle-bar D, is raised or curved over the latter to a height sufficient to prevent the possibility of its being choked up by grass or other such substances working between it and the finger-bar.
- the middle portion of it is also left open for a similar purpose.
- the two parts are fitted and secured together, either by uniting them at or near the point, or in any other suitable manner.
- the base A which is much the larger and heavier portion of the finger,is formed of cast-iron, and the cap and point B, which form the pointof the finger, of wrought or malleable iron.
- the base of cast-iron and forming the point 12 and the cap of wrought-iron By making the base of cast-iron and forming the point 12 and the cap of wrought-iron the upper side of the base, and which in fingers forms the stationary knife, can be ground 06' the smooth, and with sharp cutting-edges with gear ease and expedition. At the same time point is made of a stronger and tougher metal, better calculated to resist sudden concussions and strains than if made of cast-iron. Then by curving the cap of the finger back over the sickle-bar, and so as to prevent choking, all the advantages of the open guard orfinger are obtained. At the same time greater strength and rigidity are given to the finger.
Description
J. w. BROKAW.
Fingers for Harvesters. No. 21,533. Patented Sept. 14, 1858.
UNITED STATES PATENT OFFICE.
JOHN W. BROKAW, OF SPRINGFIELD, OHIO, ASSIGNOR TO WARDER, BROKAW & CHILD, OF SAME PLACE.
IMPROVEMENT IN GUARD-FINGERS FOR HARVESTERS.
Specification forming part of Letters Patent No. 21,533, dated September 14, 1858.
To all whom it may concern.-
Be it known that I, JOHN W. BROKAW, of Springfield, in the county of'Glarkc and State of Ohio, have invented a certain new and useful Improvement in Fingers for Harvesters, of
' spectively, of the same, and Fig. 4: a plan of the finger with the cap removed.
The object ofmy improvement is to provide a guard-finger at a cheap rate that will possess all the requisite qualities for resisting the various forces brought to bear upon it, and that will not be subject to be choked or clogged up; and its nature consists in forming the finger in two parts of different kinds of the the same metal, (wrought and cast iron,) in a manner to be hereinafter described, so that the strength of the different metals will be brought to bear in the direction that each, from its peculiar nature, will be best adapted to resist, and so that the cheapest metal will form the larger and heavier portion of the finger, by means of which the cost of the finger is materially reduced, as well because of the difference in cost of materials as in the cost of the v manufacture of that part of the finger.
To enable others skilled in the art to make, construct, and use my invention, I will now proceed to describe it in detail.
The finger,as delineated in the drawings, coir sists of two principal parts, the base A and cap-piece B, the front end of the former of which is beveled off at the sides, and a counternotch, a, as it were, formed on the under side of the point cl of the cap, into which the point 1 of the base fits.
At the rear end of the finger, in that portion of it which secures it to the finger-bar by being bolted to it on its under side, is a notch, b, of such size and shape as to receive the rear end of the cap-piece A. This end is somewhat elongated in a horizontal direction, so that when fitted in the notch 12 and the finger secured to its bar it shall be confined in that position by being compressed between the two. The rear part of the cap B, immediately over the sickle-bar D, is raised or curved over the latter to a height sufficient to prevent the possibility of its being choked up by grass or other such substances working between it and the finger-bar. The middle portion of it is also left open for a similar purpose. Thus formed, the two parts (the cap and base) are fitted and secured together, either by uniting them at or near the point, or in any other suitable manner. The base A, which is much the larger and heavier portion of the finger,is formed of cast-iron, and the cap and point B, which form the pointof the finger, of wrought or malleable iron.
By making the base of cast-iron and forming the point 12 and the cap of wrought-iron the upper side of the base, and which in fingers forms the stationary knife, can be ground 06' the smooth, and with sharp cutting-edges with gear ease and expedition. At the same time point is made of a stronger and tougher metal, better calculated to resist sudden concussions and strains than if made of cast-iron. Then by curving the cap of the finger back over the sickle-bar, and so as to prevent choking, all the advantages of the open guard orfinger are obtained. At the same time greater strength and rigidity are given to the finger.
I do not claim broadly making the cap of harvester guard-fingers of wrought or malleable iron with a base of cast-iron but What I do claim as my invention, and desire to secure byLetters Patent, is-
The peculiar construction of the cap B, as
described, when made of wrought or malleable iron, and connected to the cast-iron base A and to the finger-bar, in the manner and for the purposes set forth.
In testimony whereof I hereun to set my hand to this specification.
J. W. BROKAW. [L. s.] Witnesses:
J. R. DODGE, J. S. CHRISTIE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US21533A true US21533A (en) | 1858-09-14 |
Family
ID=2087360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US21533D Expired - Lifetime US21533A (en) | Improvement in guard-fingers for harvesters |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US21533A (en) |
-
0
- US US21533D patent/US21533A/en not_active Expired - Lifetime
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