US668717A

US668717A - Seeder and cultivator tooth.

Info

Publication number: US668717A
Application number: US4083800A
Authority: US
Inventors: John S Rowell; Theodore B Rowell
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-12-24
Filing date: 1900-12-24
Publication date: 1901-02-26
Anticipated expiration: 1918-02-26

Description

No. 663,7l7'.

. Patented Feb. 26, |90I. J. S. & T. B. RDWELL. SEEDER AN-D CULTIVATOR TOOTH.

@unanimi mea me. 24, 1906.)

(no Model.)

UNiTnD STATES PATENT rricn.

JOHN S. ROWELL AND THEODORE B. ROWELL, OF BEAVER DAM,

l WISCONSIN.

SEEDER AND CULTIVATOR TOOTH.

SPECIFICATION formingpart of Letters Patent No. 668,717, dated February 26, 1901.

Application filed December 24, 1900. Serial No. 40,838. (No model.)

To all whom t may concern:

Be it known that we, .IOHN S. ROWELL and THEODORE B. ROWELL, citizens of the United States, and residents of Beaver Dam, in the county of Dodge and State of Wisconsin, have invented cert-ain new and useful Improvements in Seeder and Gultivator Teeth; and we do hereby declare that the. following is a full, clear, and exact description thereof.

Our invention has for its object to provide simple, economical, and durable spring-trip seeder and cultivator teeth, said invention consisting in certain advantageous peculiarities of construction and combination of parts hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents a partlysectional side elevation of a spring-trip tooth in accordance with our invention, the trip of the tooth being illustrated by dotted lines in this figure; Fig. 2, a detail sectional view on the plane indicated by line 2 2 in the first ligure; Fig. 3, a perspective view of an anglebracket -that partly constitutes the upper or beam section of a jointed shank for the toothpoint; Fig. 4, a similar view of a portion of the point-section of said shank, and Fig. 5 a like view of a toggle employed in connection with the shank-sections and provided with a set-screw adjustable against one of said shank-sections to regulate tension of a cornpression-sprin g on a rod shackled tothe toggle.

Referring by letter to the drawings, A indicates each of a pair of flat metal bars that are set edgewise and connected together to form a draft-beam. Bolted between the beambars at their rear ends is a horizontal arm B of an angle-bracket having a depending vertical arni C, provided with an apertured enlargement b near its intersection with the former arm, said angle-bracket being prefer` ably malleable iron and made with upper vertical and horizontal flanges c d, abutting the realextremities and lower edges of the beambars A aforesaid. The angle-bracket is also made with a rearwardly-extending upper lug e, to which the upper ends of a pair of parallel links D are pivotally connected, the lower ends of these links being likewise connected to the upper extremity of a forked block E, that is also preferably malleable iron and made with an enlargementf, having athreaded aperture engaged by a set-screw F, said links and block consiituting a toggle.

The arm B of the angle-bracket constitutes the upper section of a shank fora tooth-point G, the other section H of the shank being in bolt-and-nut connection with the point and pivotally engaged at the upper end with the forked lower portion of said bracket-arm.

The lower shank-section is provided with an l upperlug g, that has pivotal engagement with the forked lower portion of block E, constituting part of the above-described toggle, the set-screw F of said toggle being impinged against the rear edge of the upper or beam section of the shank. By providing lng g with a plurality of apertures, as is herein shown, the normal set of the tooth-point may be varied.

A rod I is shown as having an end eye h engaged by a bolt i, that extends thro-ugh apertures made in links D, above specified, and this rod in shackle connection with the aforesaid toggle has play in the aperture with which the enlargement b of arm B of the angle-bracket4 or beam-section of the jointed point-shank is provided. A spiral `spring J is arranged on the rod to be compressed between the aforesaid arm and a washer K, a radial branchj of this Washer being extended up between the beam-bars A, set forth in the foregoing. The forward end of rod I is screwthreaded and has a nut L run thereon against the aforesaid washer, the normal tension of spring J being regulated by adjustment of set-screw F, hereinbefore specied.

When the tooth-point G meets obstructions of more than ordinary resistance in its path, it will yield with the toggle-joint in a rearward direction,there being proportionate compression of spring J, this operation bei ng illustrated by dotted lines in Fig. 1. The obstruction having been passed, there will be expansion of spring J and automatic return of the tooth-point and toggle-joint to their normal positions. Incidental to an automatic trip and recovery of the tooth-point the radial branch j of washer K will have play between the beamarms A to clear away possible accumulations of trash, such as grass and weeds.

IOO

From the foregoing it will be particularly observed that rod I and spring J are close under the draft-beam out of the way and directly over the center of tooth-point G, this being an advantageous arrangement.

Thile we have shown a preferred construction and arrangement of parts, the same may be more or less varied in practice without departure from our invention in its broadest terms.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. The combination ofadraft-beam,ajoint ed point-shank in depending rigid connection with the beam, a rear toggle connecting the point-shank section s,a rod that being shackled to the toggle extends through an aperture in the upper one of said shank-sections, and a Spiral spring held on the rod to have its rear end abut said upper shank-section.

2. The combination ofa draft-beam, ajointed point-shank in depending rigid connection with the beam, a rear toggle connecting the point-shanksections,a rod that beingshackled to the toggle extends through an aperture in the upper shank-section, a spiral spring held on the rod to have its rear end abut said uppel shank-section, and means for regulating normal tension of the spring.

3. The combination ofadraft-beam,ajoint ed point-shank in depending rigid connection with the beam, a rear toggle connecting the point-sh ank sections,a rod that bei ng shackled to the toggle extends through an aperture in the upper shank-section, a spiral spring held on the rod to abut said upper shank-section, and a set-screw adjustable in a section of the toggle against the aforesaid upper shan k-section.

4. The combination of a draft-beam comprising a pair of flat bars set edgewise, an angle-bracket having a horizontal arm made fast between the beam-bars and a depending arm constitutingpartofajointed point-shank, a rear toggle in connection with rear lugs of the bracket and lower point-shank section',

a setscrew adjustable in a toggle-section against the depending arm of the bracket, a rod that being in shackle connection with the toggle extends through an aperture in said depending bracket-arm, and a spiral spring held on the rod to abut the aforesaid depending bracketarm.

5. The combination of a draft-beam comprising a pair of flat bars set edgewise, a jointed point-shank the uppersection of which is a depending arm of an angle-bracket made fast between the beam-bars, a rear toggle connecting the point-shank sections, a rod that being shackled to the toggle extends through an aperture in said upper point-shank section, a washer facing a nut on the forward end of the rod and having a radial branch extending up between said beam-bars, and a spiral spring arranged intermediate of the washer and aforesaid upper point-shank section.

The combination of a draft-beam comprising a pair of fiat bars set edgewise, a jointed point-shank the uppersection of which is a depending arm of an angle-bracket made fast between the beam-bars, a rear toggle connecting the point-shank sections, a rod that being shackled to the toggle extends through an aperture in said upper point-shank section, a washer facing a nut on the forward end of the rod and having a radial branch extending up between said beam-bars, a spring arranged intermediate of the washer and aforesaid upper point-shank section, and means for adjusting said toggle to regulate normal tension of the spring.

In testimony that we claim the foregoing we have hereunto set our hands, at Beaver Dam, in the county of Dodge and State of Visconsin, in the presence of two witnesses.

JOHN S. ROVVELL. THEODORE B. ROWULL.

Witnesses:

L. W. BARBER, B. S. BARBER.