US354420A

US354420A - Grafting-tool

Info

Publication number: US354420A
Authority: US
Publication date: 1886-12-14
Anticipated expiration: 1903-12-14

Description

2 SheetsSheet 1.

(No Model.)

0. W. HOIT.

GRAFTING TOOL.

No. 354,420. Patented Dec. 14, 1886.

(No Model.) 2 Sheets --Sheet 2.

C. W. HOIT.

GRAFTING TOOL.

No. 354,420. Patented Dec. 14, 1886.

N PETERF. PmIn-Uxlw m lwr. wnhin wn. B4 c,

UNITED STATES PATENT OFFICE.

CHARLES w. norr, or SACRAMENTO, CALIFORNIA.

GRAFTlNG-TOOL.

SPECIFICATION forming part of Letters Patent No. 354,420, dated December 14, 1886.

Application filed June 2, 18,86.

To all whom, it may concern.-

Be it known that 1, CHARLES W. Herr, of Sacramento, Sacramento county, State of California, have invented an Improvement in Grafting'Tools; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a grafting tool or device for cutting a kerf or notch in the limb or stub, and to a corresponding formation of the end of the slip which is to be grafted upon 1t.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a view of the tool for cutting the kerf, showing the knife or cutter down. Fig. 2 shows it raised. Fig. 3 is a view of the device for forming the end of the slip. Fig. 4 is a view showing the device applied to a stub.

A is a bar or standard, which serves to support and guide the cutter, and also the lever or handle by which it is operated, and the device for removing the chip, these being contained between the upper parallelsides of the forked ends. The opposite end of the bar A may be made single, and has upon one edge (which I will call the front) a series of ratchet-teeth, B. A slotted plate, O,'is fitted to slide over the end of this bar, the back portion traveling in contact with the rear edge of the bar and the front portion projecting sufficient-ly to receive a plate, a, which extends downward between the sides of the slide 0, and has its lower end formed in a pawl, b, so as to engage the teeth or rack upon the front of bar A. The rear portion of this plate a has a semicircular notch, 0, made in it,which fits around a pin, d, passing through the front of the slide 0, and. it is thus prevented from coming out of place. Upon the top of this plate a is fixed a curved transverse plate, 0, which serves as a stub rest or support, against which the cutter acts.

It will be seen that by moving the guide or slide G the stub rest may be moved near to or farther away from the cutter, and thus brought into proper position with relation to it, so that it may be regulated to any size of stub upon which the cut is to be made, and it thus forms a resisting baek,' against which the knife may Serial No. 203,966. (Yo model.)

be operated by pressure, and all tendency of the stub to spring will be avoided. The 0pposite end of the bar or standard A is formed in two parallel parts, as before stated, and between these the cutter-bar and the operating-handle are fitted. The cutter is made of steel, and its cutting-edge, which stands nearly or quite parallel with the supporting-face of the stub-rest, tapers from the widest part, which is open, toward the narrowest end or front, which -is closed, and which is curved so as to form an arc of a circle, instead of being formed with the two sides meeting at a sharp angle or V. This construction enables me to keep this portion of the knife sharp at all times, and also makes it much stronger than if it terminated at a sharp point.

From the cutting-edge the body of the knife or cutter G extends toward the upper end of the standard A, lying between the two sides,

which extends outward from the standard around its lower end, so as to keep it in place. The cutter-bar is extended upward by a simple continuation of its two sides, which, while lying between the two sides of the standard A, are sufficiently separated to admit the operating handle or lever F.

have large circular openings made in the1n,and eccentric-lugs F project from the sides of the end of the lever h about the thickness of the sides of the cutter-bar at this point, and they enter the openings made in the end of the cutter-bar, so that when the lever is moved about its fulcrum-pin K the eccentrically-disposed lugs will cause thecutter-bar to be moved to or from the stub-rest.

Between the sides of the standard A, below oted or fulerumed a lever, L, which has hinged to its lower part a sharp point, M, that pro jects between the open rear sides of the cutter near its edge. Just above this point and about opposite the fulcrum-pin N, upon which the lever turns, is another projecting point, J, which extends between the sides of the cutter-bar, so that it will stand above the chip which is to be cut. a

The upper end. of the lever L is curved so and it is also guided by a curved strap, H, t

The two sides of the head of the cutter-bar the lever F, and behind the cutter-bar, is piv- 9o of the cutter.

that the lever will be actuated by the movement of the cam-lever F.

The operation will then be as follows: The stub in which the kerf is to be cut is rested against the stub-rest C, and the pressure causes the pawl 12 to engage the teeth of the rack upon the front of the standard A, thus holding the stub-rest at the proper distance from the cutter, the lever of which may be down, as shown in Fig. 1. When the lever F is pressed down,

,as shown in Fig. 1, it strikes a lug or projection, 0, upon the back of the lever L and above the fulcrum-pin N, and thus forces the upper end of the lever upward into the rear curved portion of the upper part of the cutter-bar and withdraws the point M between the sides of standard A. The lever F being then raised, the. eccentrm-lugs F will act upon the upper end of the cutter-bar, forcing it down between the guides and the guiding'strap H, so that its lower edge makes a cutin the stub, which is supported in opposition to it, as before described. At the same time the curved head of the cutter-bar acts to force the upper end of the lever L backward, and it thus projects the point M forward into the stub, while the cutter is advanced upon each side of the point, so as to cut the chip. The continued movement of the lever L acts to raise the point M, and thus split off the chip which has been cut, and which is. now inclosedbetween the sides \Vhen the lever F is again pressed down, it strikes upon the upper end of the lever L, or upon the lug O, and thus forces the upper end inward, and this action causes the point J, which projects between the sides of the cutter and above the chip, to force the latter downward and out of the cutter, so as to leave it free to make a new cut, the point M being again withdrawn, as before described. The slip which is to be fitted into the cut in the stub thus made is shaped by means of the cutter P, which has two sides formed similar to the sides of the cutter G, both ends of this cutter being made open, as shown in Fig. 3.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isa 1. A graftingtool consisting of a standard having a cutter guided upon it so as to move parallel to one side, a lever or handle by which it is operated, and a toothed rack formed upon the opposite end of the standard, in combination with the slotted plate or slide having a curved stub-support, said slide guided upon the standard so as to move over the rack, and a pawl by which the slide and stub-support may be held at any point desired with relation to the cutters, substantially as herein described.

2. The standard upon which the cutter is guided and operated, having a toothed rack upon one edge and a slide fitted to move over this rack, in combination with a stubsupport having a plate projecting from its back, ex-

tending downward between the sides of the guides, and having a pawl-point formed atits lower end to engage the rack when pressureis brought upon the stub-rest, substantially as herein described.

3. The sliding guide moving over the rack or toothed portion of the cutter-standard, projecting beyond the serrated edge of the standard and having a pin passing through the outer portion, as shown, in combination with the stub-support and plate projecting from the back and entering the open slot in the guide, said plate having a semicircular notch formed inone edge and engaging the pin in the slot, and having a pawl-point formed upon the opposite lower angle to engage the teeth of the standard, substantially as herein described.

4. In a, grafting-tool, the standard formed in a single piece having corrugations or teeth formed upon the edge near one end and a stub support fixed to slide over and engage with these teeth, so as to be held in any desired position, the opposite end of the standard being divided so as to form two parallel sides between which the cutter-bar is supported, said cutter having circular openings made in its head, in combination with a lever having an eccentrically-shaped head or lugs which fit said opening, and by which the cutter is reciprocated between the parallel sides of the standard, substantially as herein described.

5. In a grafting-too], the standard having one end formed with teeth to engage an adjustable sliding stubsupport and the opposite end formed with two parallel sides between which the cutter bar is reciprocated and guided, in combination with a projecting curved strip, H, extending outward from the sides of the standard and acting asa guide for the lower part of the cutter-bar, substantially as herein described.

6. The cutter-bar and eccentrically-operating lever fulcrumed and guided between the sides of the twopart standard, in combination with the lever L, fulcrumed to the standard and having a projecting point, M, pivoted to its lower end, substantially as herein de scribed.

7. The lever L, fulcrumed between the sides of the standard and having the projecting point M pivoted to its lower end, in combination with the point J, projecting rigidly from the lever L, so as to enter between the sides of the cutter-bar, substantially as herein described.

8. The lever L, fulcrumed between the sides of the standard, having the projecting points M and J, as shown, and the lug 0 upon its rear portion, in combination with the eccentricallymoving and curved cutter-bar, against which the upper end of the lever rests so as to be operated thereby, substantially as herein described. I

9. In a grafting-tool, the standard having the reciprocating cutter guided so as to move ter as the latter is moved into the stub, substantially as herein described.

y In Witness whereof I have hereunto set my hand.

CHARLES XV. HOIT.

\Vitn (asses:

J. G. TUBBs, O. A. HoIT.