US199674A - Improvement in harvester-knife attachments for grindstones - Google Patents

Improvement in harvester-knife attachments for grindstones Download PDF

Info

Publication number
US199674A
US199674A US199674DA US199674A US 199674 A US199674 A US 199674A US 199674D A US199674D A US 199674DA US 199674 A US199674 A US 199674A
Authority
US
United States
Prior art keywords
knife
frame
harvester
blocks
grindstones
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
Publication date
Application granted granted Critical
Publication of US199674A publication Critical patent/US199674A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/55—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of knife bars for harvesting machines

Definitions

  • the object of my invention is to furnish a cheap and convenient device to be attached to the frame of an ordinary grindstone for the purpose of sharpening harvester and reaper knives, constructed, arranged, and operating substantially as hereinafter described and claimed.
  • -A is a grindstone, set in a frame in the well-known manner.
  • the frame shown in the drawing is that of my patent of October 11, 1875.
  • To one end of said frame are secured two upright posts, B B, having a cross-head, b.
  • a frame, consisting of two side pieces, 0 G, and strong end pieces 0 G, is used for holding the knife to be ground or sharpened.
  • This frame is attached to the cross-head of the upright posts by means of a hinge, consisting of two rods or bolts, 01 d, pivoted together, one rod or bolt being set in the top of the said cross-head, and the other in the end of the knife-frame, both of which, however, are permitted to turn in each of the frames, thus allowing the knife-frame to be turned in any direction.
  • a hinge consisting of two rods or bolts, 01 d, pivoted together, one rod or bolt being set in the top of the said cross-head, and the other in the end of the knife-frame, both of which, however, are permitted to turn in each of the frames, thus allowing the knife-frame to be turned in any direction.
  • a rod, H having a clamp and screw, h, by which it may be adjusted, on the top of which the end of the knife-holding frame rests.
  • the operation of this is as follows:
  • the blocks D D, for holding the knife to be sharpened, may he slid upon the side pieces 0 O, and secured in position for grinding each side of the tooth-sections of said knife, the knife being slipped along on the blocks, and each tooth ground successively. When all the teeth have been sharpened on one side the blocks are shifted for grinding the other side.
  • the object of the supporting-rod H is that, in case of any uneven places in the grindingsurface of the stone, the knife shall not be ground unevenly, and the result will be that the stone would be worn down true.
  • a post might be driven or set into the ground for the purpose.
  • I claim 1 The frame 0 0, having longitudinal grooves c e, the blocks D D, having springplates F F, with thumb-screws ff, the clamps E E, and bearing-blocks g y, when constructed substantially as described, in combination with grindstone A, as and for the purpose set forth.

Description

G. A. WHITNEY. Harvester Knife Attachment for Grindstones.
Patented Jan. 29,1878.
UNITED STATES PATENT OFFICE.
GEORGE A. WHITNEY, OF LA GRANGE, OHIO.
IMPROVEMENT IN HARVESTER-KNIFE ATTACHMENTS FOR GRINDSTONES.
Specification forming part of Letters Patent No. 199,674, dated January 29, 1878 application filed September 10, 1877.
' specification and accompanying drawing, in
which- Figure 1 is a perspective view of a grind- I stone having my improvement attached.
The object of my invention is to furnish a cheap and convenient device to be attached to the frame of an ordinary grindstone for the purpose of sharpening harvester and reaper knives, constructed, arranged, and operating substantially as hereinafter described and claimed.
In the drawing,-A is a grindstone, set in a frame in the well-known manner. The frame shown in the drawing is that of my patent of October 11, 1875. To one end of said frame are secured two upright posts, B B, having a cross-head, b. A frame, consisting of two side pieces, 0 G, and strong end pieces 0 G, is used for holding the knife to be ground or sharpened. This frame is attached to the cross-head of the upright posts by means of a hinge, consisting of two rods or bolts, 01 d, pivoted together, one rod or bolt being set in the top of the said cross-head, and the other in the end of the knife-frame, both of which, however, are permitted to turn in each of the frames, thus allowing the knife-frame to be turned in any direction.
In the upper face or sides of the side pieces 0 G are made longitudinal grooves e e. Lying on top of the said side pieces 0 O are blocks D D, having a tongue or pins on their under surfaces, which play in the aforesaid grooves e e, serving as guides to the blocks. These blocks are held in place by means of screwclamps E E, embracing both the blocks and side pieces. On the top of each of said blocks is placed a spring-plate, F F, fastened at one end. Through said spring plates are put thumb-screws f f. Between the forward ends of these plates and the blocks is held the knife to be ground. Small bearing-blocks g g are secured to the inside of the side pieces O G, which serve as guards to prevent the edge of the adjoining tooth of the knife from touching the side of the stone while grinding a tooth.
To the frame which supports the stone A, through the end piece, is placed a rod, H, having a clamp and screw, h, by which it may be adjusted, on the top of which the end of the knife-holding frame rests.
The operation of this is as follows: The blocks D D, for holding the knife to be sharpened, may he slid upon the side pieces 0 O, and secured in position for grinding each side of the tooth-sections of said knife, the knife being slipped along on the blocks, and each tooth ground successively. When all the teeth have been sharpened on one side the blocks are shifted for grinding the other side.
The object of the supporting-rod H is that, in case of any uneven places in the grindingsurface of the stone, the knife shall not be ground unevenly, and the result will be that the stone would be worn down true.
With this attachment harvester-knives are easily ground on any grindstone.
Should there be no means of attaching the uprights B B to arude frame supporting the stone, a post might be driven or set into the ground for the purpose.
Having described my invention, I claim 1. The frame 0 0, having longitudinal grooves c e, the blocks D D, having springplates F F, with thumb-screws ff, the clamps E E, and bearing-blocks g y, when constructed substantially as described, in combination with grindstone A, as and for the purpose set forth.
2. The adjustable supporting-rod H, in combination with holding-frame G C and grindstone-frame, as shown and described.
I GEORGE A. WHITNEY. Witnesses:
G. H. RoBBrNs,
OuARLns HASTINGS.
US199674D Improvement in harvester-knife attachments for grindstones Expired - Lifetime US199674A (en)

Publications (1)

Publication Number Publication Date
US199674A true US199674A (en) 1878-01-29

Family

ID=2269081

Family Applications (1)

Application Number Title Priority Date Filing Date
US199674D Expired - Lifetime US199674A (en) Improvement in harvester-knife attachments for grindstones

Country Status (1)

Country Link
US (1) US199674A (en)

Similar Documents

Publication Publication Date Title
US199674A (en) Improvement in harvester-knife attachments for grindstones
US1432193A (en) Lawn-mower sharpener
US831541A (en) Knife-grinding machine.
US150086A (en) Improvement in portable sharpening-fvlachlnes
US982423A (en) Lawn-mower-sharpening device.
US409337A (en) Scarfing-machine
US962047A (en) Planer-knife sharpener.
US558522A (en) rockwell
US485607A (en) Machine for grinding the teeth of harvester
US1193643A (en) Saw-grinding- machine
US157543A (en) Improvement in grinding-machines
US122064A (en) Improvement in apparatus for sharpening harvester-knives
US418086A (en) Device for grinding mower and reaper knives
US470905A (en) Knife-grinder for mowing-machines
US192427A (en) Improvement in mower and reaper knife sharpeners
US267579A (en) Planer-knife grinder
US593964A (en) Clarence j
US418977A (en) Lawn mower knives
US265577A (en) Knife polisher and grinder
US233182A (en) Machine for grinding mower and reaper knives
US402465A (en) Device to facilitate grinding sections of mowing-machines
US1253829A (en) Sickle-grinder.
US1155803A (en) Knife-grinding machine.
US2711060A (en) Sickle knife sharpener attachment for tractor
US199261A (en) Improvement in holders for a mower-knife-sharpening tool