US1295484A - Harrow. - Google Patents

Harrow. Download PDF

Info

Publication number
US1295484A
US1295484A US20383717A US20383717A US1295484A US 1295484 A US1295484 A US 1295484A US 20383717 A US20383717 A US 20383717A US 20383717 A US20383717 A US 20383717A US 1295484 A US1295484 A US 1295484A
Authority
US
United States
Prior art keywords
harrow
portions
hollow
tooth
frame
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
Application number
US20383717A
Inventor
Christian Oluf Hald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US20383717A priority Critical patent/US1295484A/en
Application granted granted Critical
Publication of US1295484A publication Critical patent/US1295484A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B35/00—Other machines for working soil not specially adapted for working soil on which crops are growing
    • A01B35/02—Other machines for working soil not specially adapted for working soil on which crops are growing with non-rotating tools
    • A01B35/10—Other machines for working soil not specially adapted for working soil on which crops are growing with non-rotating tools mounted on tractors
    • A01B35/12—Other machines for working soil not specially adapted for working soil on which crops are growing with non-rotating tools mounted on tractors with spring tools or with resiliently-or flexibly-attached rigid tools

Definitions

  • Fig. 2 is a perspective view of one form of tooth employed.
  • Fig. 3 is a sectional view through Fig. 2.
  • the reference numeral 1 denotes the longi tudinal and 2 the transverse bars.
  • the teeth 3 extend through said bars and are carried by the same.
  • To the bars 1 I secure the draft bars 4; to which the draft chains, not shown, are secured.
  • a block 6 isformed with a solid portion 7 that carries a tooth 8, the threaded shank 9 of which rises above said portion 7 to pass through the bars 1, 2 and a pin 10 also carried by the block portion 7 is adapted to fit into a small recess in each bar 1 to revent a pivotal movement of the said block.
  • the block 6 is formed with a hollow slotted portion 11 which rises at an angle above the block portion 7 and in said hollow portion 11 an expansion coil spring 12 is arranged which abuts against the head 13 of the movable tooth 14:.
  • the spring also acts as a shock absorber and protects the tooth from breakage by sudden impact with a non-flexible substance.
  • a frame comprising solid and hollow portions, the hollow portions being pitched at an angle to the solid portions, expansion springs disposed in the hollow box portions, teeth movably carried by the hollow box portions, said teeth being yieldingly retained in a predetermined position with relation to said hollow box portions through contact with said springs, and means for securing the solid box portions to said frame.
  • a frame comprising solid and hollow portions, the hollow box portions being pitched at an angle to the solid portions, expansion springs disposed in the hollow box portions, teeth movably carried by the hollow box portions, said teeth being yieldingly retained in a predetermined position with relation to said hollow box portions through contact with said springs, teeth carried by said solid box portions and formed with threaded shanks to engage said frame, and pins carried by said solid portions for engagement with said frame.

Description

C. O. HALD.
HARROW.
APPLICATION HLED NOV. 24. mm.
1,295,484. Patented Feb. 25, 1919.
TTO/PNE Y Y n era PATEN OFFICE.
HARROW.
Specification of Letters Patent.
Patented Feb. 25, 1919.
Application filed November 24-, 1917. Serial No. 203,837.
This invention relates to improvements in harrows and its object is to produce a harrow of simple construction that is' eflicient in operation. With the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the appendedclaims and illustrated in the accompanying drawings which form a part of this specificationand in which Figure 1 is a view of my improved harrow in front elevation.
Fig. 2 is a perspective view of one form of tooth employed. p
Fig. 3 is a sectional view through Fig. 2.
Like reference characters denote corresponding parts throughout.
The reference numeral 1 denotes the longi tudinal and 2 the transverse bars. The teeth 3 extend through said bars and are carried by the same. To the bars 1 I secure the draft bars 4; to which the draft chains, not shown, are secured. At the ends of the harrow frame, or throughout the frame if preferred, I provide a type of tooth adapted to ride over stones and obstructions generally. A block 6 isformed with a solid portion 7 that carries a tooth 8, the threaded shank 9 of which rises above said portion 7 to pass through the bars 1, 2 and a pin 10 also carried by the block portion 7 is adapted to fit into a small recess in each bar 1 to revent a pivotal movement of the said block.
The block 6 is formed with a hollow slotted portion 11 which rises at an angle above the block portion 7 and in said hollow portion 11 an expansion coil spring 12 is arranged which abuts against the head 13 of the movable tooth 14:. Should the free end of the tooth 14 encounter an obstruction, when the harrow is moving forward, the tooth head will compress the spring 12 and in doing so it will ride over the upwardly inclined base of the hollow portion of the block and so lift the tooth 14 high enough to carry it over the average obstruction without danger of damage to the tooth. The spring also acts as a shock absorber and protects the tooth from breakage by sudden impact with a non-flexible substance.
What is claimed is 1. In a harrow, a frame, boxes comprising solid and hollow portions, the hollow portions being pitched at an angle to the solid portions, expansion springs disposed in the hollow box portions, teeth movably carried by the hollow box portions, said teeth being yieldingly retained in a predetermined position with relation to said hollow box portions through contact with said springs, and means for securing the solid box portions to said frame.
2. In a harrow, a frame, boxes comprising solid and hollow portions, the hollow box portions being pitched at an angle to the solid portions, expansion springs disposed in the hollow box portions, teeth movably carried by the hollow box portions, said teeth being yieldingly retained in a predetermined position with relation to said hollow box portions through contact with said springs, teeth carried by said solid box portions and formed with threaded shanks to engage said frame, and pins carried by said solid portions for engagement with said frame.
3. In a harrow, hollow slotted boxes secured to the frame thereof, said boxes being disposed at an oblique angle to the harrow frame, expansion springs carried in said boxes, and teeth movably carried by said boxes, said teeth being yieldingly retained in a predetermined position with relation to said boxes through contact with said springs.
In testimony that I claim the foregoing as my own I have hereto aflixed my signature inthe presence oftwo subscribing witnesses.
CHRISTIAN OLUF I-IALD.
Witnesses:
L. K. LARSON, OLUT HEGGE.
Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,
Washington, D. G.
US20383717A 1917-11-24 1917-11-24 Harrow. Expired - Lifetime US1295484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US20383717A US1295484A (en) 1917-11-24 1917-11-24 Harrow.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20383717A US1295484A (en) 1917-11-24 1917-11-24 Harrow.

Publications (1)

Publication Number Publication Date
US1295484A true US1295484A (en) 1919-02-25

Family

ID=3363036

Family Applications (1)

Application Number Title Priority Date Filing Date
US20383717A Expired - Lifetime US1295484A (en) 1917-11-24 1917-11-24 Harrow.

Country Status (1)

Country Link
US (1) US1295484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871959A (en) * 1954-10-18 1959-02-03 Koskenmaki Frans Fredrik Cultivator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871959A (en) * 1954-10-18 1959-02-03 Koskenmaki Frans Fredrik Cultivator

Similar Documents

Publication Publication Date Title
US1295484A (en) Harrow.
US1041975A (en) Cultivator-tooth.
US418503A (en) Attachment for holding drill-tubes
US1204441A (en) Grain-lifter for harvesters.
US790410A (en) Spring-trip.
US274962A (en) Cultivator
US1176334A (en) Harrow.
US1103101A (en) Spring-tensioned rolling cutter.
US928029A (en) Cultivator.
US642349A (en) Implement for cultivating land.
US1251636A (en) Harrow attachment.
US887862A (en) Halter.
US148906A (en) Improvement in grain-drills
US1230964A (en) Plow attachment.
US364203A (en) Harrow
US604274A (en) Combination plow and harrow
US594463A (en) George e
US451253A (en) Cultivator attachment
US592555A (en) Half to james w
US1061354A (en) Spring-tooth cultivator.
US47153A (en) Improved seed-drill
US536231A (en) Oliver b
US455688A (en) Wheel-cultivator
US339432A (en) Assig-noe of one-half
US1220169A (en) Reel-holder.