US374449A - Pitman - Google Patents
Pitman Download PDFInfo
- Publication number
- US374449A US374449A US374449DA US374449A US 374449 A US374449 A US 374449A US 374449D A US374449D A US 374449DA US 374449 A US374449 A US 374449A
- Authority
- US
- United States
- Prior art keywords
- pitman
- cutter
- head
- bar head
- block
- 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
- 238000005266 casting Methods 0.000 description 4
- 230000000284 resting Effects 0.000 description 4
- 230000003467 diminishing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Images
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
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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
- Y10T74/21—Elements
- Y10T74/2142—Pitmans and connecting rods
- Y10T74/2144—Yieldable
Definitions
- My invention relates to improvements in pitman-connecting devices for mowers; and it consists in certain novel features hereinafter first fully described, and then pointed out in the claims.
- Figure 1 is a perspective view of my improved device
- Fig. 2 is a central longitudinal vertical section of the same.
- A designates the cutter-bar, and B the cuttenbar head, secured thereto at one end.
- This cutterbar head is composed of a triangular casting having open sides and having a longitudinal slot, 0, in its rear edge, through which the pitman passes.
- I provide a coupling-block, E, which is secured adj ustably within the same by the setscrew D, as shown.
- This set screw D is inserted through and works in the end of the cutter-bar head. Its end bears against the block E, so that by turning the said screw inward the block will be forced from the end of the cutter-bar head, thereby increasing the tension of the leaf springs, presently referred to.
- By turning the screw in the opposite direction the block will be free to move toward the front end of the cutt-erbar head, thereby diminishing thetension of the springs.
- E E designate two-leafsprings which have their forward ends secured to opposite sides of the coupling-block and their rear ends resting against the inner sides of the rear end walls of the casting or cutter-bar head on opposite sides of the slot 0.
- the pitman E has its front end connected to the coupling-block E, and to the rear end of the said rod I. secure the band or yoke G, which encircles the eccentric H on the driving-shaft I.
- the said rod communicates its motion directly to the cutter-bar.
- the pitman acts directly against the eouplingblock, and thereby actuates the cutter-bar head, and in its backward movement it acts upon the springs E to give the returnstroke to the said cuttcrbar head.
- the springs serve to make the strokes of the pitman smooth and even and also to overcome the effects of the change of stroke.
- the rear part of the cutter-bar head serves as a guide for the pitman, which passes through the slot therein, and the cutter-bar head serves also as a means for securing the cutter-bar.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Harvester Elements (AREA)
Description
(No Model.)
B. W. GAVDY.
PITMAN.
Patented Dec. 6,1887.
Z .w w W w I @51 1 @4101, nm m UNITED STATES PATENT OFFICE.
EDWARD W. OADY, OF MASON CITY, IOWA.
PITMAN.
SPECIFICATION forming part of Letters Patent No. 374,449, dated December 6, 1887.
Application filed December 18, 1886. Serial No.221,994. (No model.)
To aZZ whom it may concern.-
Be it known that I, EDWARD W. CADY, a citizen of the United States, residing at Mason City, in the county of Oerro Gordo and State of Iowa, have invented a new and useful Improvement in PitmauOonnecting Devices for Mowers, of which the following is a specification.
My invention relates to improvements in pitman-connecting devices for mowers; and it consists in certain novel features hereinafter first fully described, and then pointed out in the claims.
In the accompanying drawings, which fully illustrate my invention, Figure 1 is a perspective view of my improved device, and Fig. 2 is a central longitudinal vertical section of the same.
Referring to the drawings by letter, A designates the cutter-bar, and B the cuttenbar head, secured thereto at one end. This cutterbar head is composed of a triangular casting having open sides and having a longitudinal slot, 0, in its rear edge, through which the pitman passes. In the forward end of this triangular cutter-bar head I provide a coupling-block, E, which is secured adj ustably within the same by the setscrew D, as shown. This set screw D is inserted through and works in the end of the cutter-bar head. Its end bears against the block E, so that by turning the said screw inward the block will be forced from the end of the cutter-bar head, thereby increasing the tension of the leaf springs, presently referred to. By turning the screw in the opposite direction the block will be free to move toward the front end of the cutt-erbar head, thereby diminishing thetension of the springs.
E E designate two-leafsprings which have their forward ends secured to opposite sides of the coupling-block and their rear ends resting against the inner sides of the rear end walls of the casting or cutter-bar head on opposite sides of the slot 0. The pitman E has its front end connected to the coupling-block E, and to the rear end of the said rod I. secure the band or yoke G, which encircles the eccentric H on the driving-shaft I.
and the said rod communicates its motion directly to the cutter-bar. Inits forward move ment the pitman acts directly against the eouplingblock, and thereby actuates the cutter-bar head, and in its backward movement it acts upon the springs E to give the returnstroke to the said cuttcrbar head. It will thus be seen that the springs serve to make the strokes of the pitman smooth and even and also to overcome the effects of the change of stroke. It will also be seen that the rear part of the cutter-bar head serves as a guide for the pitman, which passes through the slot therein, and the cutter-bar head serves also as a means for securing the cutter-bar.
My device is simplev and efficient, and its advantages will be readily appreciated.
Having thus described my invention, what I elai m, and desire to secure by Letters Patent,
1. The combination of the cutter bar head having the slot 0, and the pitman secured within the cutter-bar head and passing through the slot 0, and mechanism for reciprocating said pitman, substantially as set forth.
2. The combination of the cutter-bar head having the slot 0, the pitman secured within the cutter-bar head and passingthrough the slot 0 and having the yoke or band, the eccentric, and the drivingshaft, substantially asspecified.
3. The combination of the cutterbar head, the coupling-block adj ustably secured within the cutter-bar head, the pitman connected to the couplingblock, the springs having one end secured to the coupling-block and their other ends resting against the rear end of the cutterbar head, and mechanism for reciprocating the pitman, substantially as set forth.
In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.
E. V. OADY.
Witnesses:
JAS. E. BLY'IHE, J. E. E. MURKLEY.
Publications (1)
Publication Number | Publication Date |
---|---|
US374449A true US374449A (en) | 1887-12-06 |
Family
ID=2443459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US374449D Expired - Lifetime US374449A (en) | Pitman |
Country Status (1)
Country | Link |
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US (1) | US374449A (en) |
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0
- US US374449D patent/US374449A/en not_active Expired - Lifetime
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