US904547A - Ledger-plate and knife-guard. - Google Patents
Ledger-plate and knife-guard. Download PDFInfo
- Publication number
- US904547A US904547A US40970308A US1908409703A US904547A US 904547 A US904547 A US 904547A US 40970308 A US40970308 A US 40970308A US 1908409703 A US1908409703 A US 1908409703A US 904547 A US904547 A US 904547A
- Authority
- US
- United States
- Prior art keywords
- guard
- plate
- ledger
- knife
- edges
- 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
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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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Knives (AREA)
- Shearing Machines (AREA)
Description
S. F. MARTIN. LEDGEB. PLATE AND KNIFE GUARD. APPLIOATION rum) umi'l, 1908.
904,547. Patented Nov.24, 1908.
llllllll ll UNITED STATES PATENT OFFICE.
SAMUEL F. MARTIN, OF NORMAN, OKLAHOMA, ASSIGNOR OF ONE-HALF TO T. J. NOLAN, OF NORMAN, OKLAHOMA.
LEDGER-PLATE AND KNIFE-GUARD.
Application filed January 7, 1908.
Specification of Letters Patent.
To all whom it may concern:
Be it known that I, SAMUEL F. MARTIN, a citizen of the United States, residing at Norman, in the county of Cleveland and State of Oklahoma, have invented a new and useful Ledger-Plate and Knife-Guard, of which the following is a specification.
This invention has relation to ledger plates and knife guards and consists in the novel construction and arrangement of their parts as hereinafter shown and described.
The object of the invention is to provide a ledger plate and knife guard of peculiar configuration which is adapted to cooperate with the knives of a sickle bar in such man her as to reduce friction and facilitate th cutting operation.
The ledger plate is inserted in the knife slot of the bar and is provided with inclined cutting edges which in turn are provided with transversely disposed serrations.
Figure l is a longitudinal sectional View of the guard with the ledger plate applied thereto. Fig. 2 is a perspective view of the ledger plate, and Fig. 3 is a top plan view of a portion of the guard.
The knife guard l is provided with the blade slot 2, the floor of which is provided at the middle of its rear edge with a lug 3. The upper part of the guard and the floor of the guard is provided with a longitudinally curved edge to correspond with the curved edges of the ledger plate hereinafter described. The ledger plate 4: rests upon the floor of the slot 2 and is provided at its rear edge with a recess 5 which fits snugly about the lug 3. A rivet or other securing device 6 passes transversely through the plate 4 and the underlying portion of the guard 1. The plate 4 is provided with the longitudinally curved'side cutting edges 7 which are beveled toward the upper surface of the plate and provided with the transversely disposed serrations 8. The curved edges 7 of the plate lie between the upper and lower curved edges of the guard 1. As the blades of the knife reciprocate over the edges 7 of the plate 4. the straw of the grain is caught between the serrations 8 and is severed with less friction and drag than would occur if theserrations were not present; thus, the friction and draft of the apparatus is materially reduced and the strain on the arts is minimized. The curved edges 0 the guard 1 also cooperate with the knives in separating the stalks of-the grain to facilitate the cutting operation.
Having thus described my invention, what I claim as new and desire to secure by Letters-Patent is:
A cutting device comprising a guard having a blade slot and concaved sides which define the upper and lower edges of the said slot, a ledger plate mounted upon the floor of said slot and having curved side edges which correspond substantially to the curvature of the upper and lower edges of the guard slot.
In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.
SAMUEL F. MARTIN. Witnesses E. M. MAPHIS, J. F. NORMAN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40970308A US904547A (en) | 1908-01-07 | 1908-01-07 | Ledger-plate and knife-guard. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40970308A US904547A (en) | 1908-01-07 | 1908-01-07 | Ledger-plate and knife-guard. |
Publications (1)
Publication Number | Publication Date |
---|---|
US904547A true US904547A (en) | 1908-11-24 |
Family
ID=2972982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US40970308A Expired - Lifetime US904547A (en) | 1908-01-07 | 1908-01-07 | Ledger-plate and knife-guard. |
Country Status (1)
Country | Link |
---|---|
US (1) | US904547A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2590788A (en) * | 1949-01-26 | 1952-03-25 | Joseph E Novak | Mower cutter bar guard |
-
1908
- 1908-01-07 US US40970308A patent/US904547A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2590788A (en) * | 1949-01-26 | 1952-03-25 | Joseph E Novak | Mower cutter bar guard |
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