US374449A

US374449A - Pitman

Info

Publication number: US374449A
Authority: US
Publication date: 1887-12-06
Anticipated expiration: 1904-12-06

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.