US323244A - Said w - Google Patents

Description

(N0 Model.) 3 Sheets-Sheet 2. A

J. E. WEBSTER & w. E. E0. F. PHASE. HARVESTER KNIFE GRINDER.

N0. 323,244. Patented July 28, 1885.

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(No Model.) 3 Sheets-Sheet 3. J. F. WEBSTER 82; W. H. & 0. P. PHASE. HARVESTER KNIFE GRINDER.

No. 323,244. a Patented July 28, 1885.

UNITED STATES PATENT OFFICE.

JOHN F. WEBSTER, WARREN H. rEAsE, AND CHARLES F. rEAsE, oFELK- HART, INDIANA; SAIDW. H. PEASE AND 0. r. .PEASE AssIGNons TO SAID \VEBSTER,

HARVESTER-KNIFE GRINDER.

SPEClPICATION forming part of Letters Patent No. 323,244, dated July 28, 1885.

Application filed October 31, 1884. (No model.)

To all whom it may concern.-

Be it known that we, JOHN F. WEEsTER, WARREN H. PEAsE, and CHARLES F. PEASE, citizens of the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Harvester-Knife Grinders; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked the'reomwhich form a I 5 part of this specification.

v This invention has relation to improvements 7 in harvester-knife grinders, and has for its obj ect to provide simple and convenient means whereby'the grinding-wheel may be driven with great speed, and the machine may be constructed within a small compass.

It has for a further object to so construct the grinding-wheel supporting devices that' the said grinding-wheel may be readily moved 2 in any desired plane or curve. v

It has for other objects to provide simple means whereby the harvester-knife may be firmly supported and securely clamped in place.

It has for further objects other improvements, as will be presently described.

The invention consists in certain novel constructions, combinations,andarrangements of the several parts, as will be hereinafter more fully described and claimed.

In the drawings, Figure 1 is a perspective. view of our machine with the parts adjusted into position for sharpening a harvester-knife' Fig. 2 is a perspective view of the machine with the grinding-wheel adjusted in position for general grinding. Fig. 3 is aside view of the machine as shown in Fig. 1.. Fig. 4 is a plan view of the supplemental base-plate. Fig. 5 is a detail View of the combined lever and 5 wedge. Figs. 6 and 7 are perspective views of the knife-clamp. Figs. 8 and9 are respectively top and bottomviews of the knife-supports. Figs. 10 and 11 are detached sectional .views on,respectively,1ines w a: and ye, Fig. 2.

. pivoted the mainframe C andthe drive-wheel In carrying out our invention we usually employ a base, A, at one end of which is mounted a standard, B, preferably curved forward-at its upper end, and on the upper forward end of this standard is journaled or D, usuallyv by means of the pintle E, passed through a bearing, B, on the standard, and having its ends. extended on the opposite sides of the same to receive the bearing OO of the main frame and the wheel. The wheel is held on. the pintle by the head E of same, and it is usual to providea set-screw,E, turned through. the bearing B of the standard and against the pintle E, so as to hold said pintle from longitudinal displacement. It is manifest, however, that the main frame and the drive-wheel may be pivoted to the standard invarious man- 'ners from that shown without departing from the spirit of our invention, and that the form or arrangement of the standard B might be varied. We prefer, however, to use'the standard,and to-cnrve it, as shown,in order .to provide the space below and in rear of the pivot, between the main frame and standard,for thepurposes of receiving the grinding-wheel and 7 5 permitting the adjustments and manipulations thereof presently described. The main frame supports the grindingwheel F on its outer end, usually, and preferably in the manner presently described, and the said main frame is provided in its outer end with a pinion, 0", which is meshed with and drives the grinding-wheel. The drivewheel. D is provided with internal gear-teeth,

D, which mesh with the teeth of the pinion G", which pinion is located Within. theinternal radiusof the drive-,wheel. By this arrangement of, gearing we are able to use a large-- sized gear-wheel, and yet reduce the length of themain frame, securing at the same time a high rate of speed as is desirable, and economizing space, rendering thema'chine more compact. p Instead of supporting the grinding-wheel directly on the main frame, as might be done, 5 we prefer to support it on the outer end of the supplemental frame G, the inner 'end of which is journaled or hinged to the outer end of the main frame. The shaft of the grinding-whecl is held to the. supplemental frame by suitable removable boxes, so that the said grinding-wheel maybe removed and one of cylindrical shape substituted for the doublecone grinder shown, when it is desired to use the machine for general grinding purposes.

' vided with a handle, and be revolved without the use of-pinion C and wheel D, and that the machine might be operated in such man ner;-but we prefer to employ the construction as shown, because thereby ahigh rate of speed maybe obtained and the machine be easily operated.

The supplemental frame G is provided with a handle, I. This handle might be extended laterally from the side of the said frame; but it is preferred to project it in rear or beyond the pivot of same with the main frame, as shown. The object of this arrangement of the handle is mainly to give the same the advantage of leverage in the manipulation of the frame. Another object of so arranging the handle I is that it forms a stop engaging against the outer side of the main frame and holding the parts in position shown in Fig. 2.

It will also be noticed that the handle I is inclined outward, so that in the use of the machine the hand'of the operator will be out of the way, and will not obstruct his sight of the harvester-knife and the grinder in contact therewith. VVhen in use sharpening harvester-knives, the parts are adjusted into the position shown in Figs, 1 and 3. In this position, it will be noticed, the grinder is free to be adjusted in the are described by the swinging of the main frame, or it may be moved by properly swinging both the main frames and the supplemental frames in a plane parallel with the base, or at any such angle to such base as may be desirable in the operation of the machine. the operator is given a large freedom in the handling of the grinder,so that it may be easily manipulated in such manner as to properly grind away any irregular projections or rough-' ness in any part of the harvester-knife.

On the 'base A are mounted or formed the transverse ways J J The forward ways, J, are broken away. een'trally to permit the moiions of the grinder. On these'ways are placed the knife-supports K, having their inner ends angled to conform, approximately, to the angle of a harvester-knife blade. These supports in operation have their inner edges rested under and close to the edge of the knife-blade which is being sharpened, and they may be adjusted in the'direction of their length, so as By such adjustments to be set properly to suit the various angles at which different blades are cut.

'In order to hold the supports they are provided with slots K, elongated in the direction of their motion, and set-screws L are turned through slots K and enter-i nto threaded sockets in the base. The heads of these screws extend in' the sides of the slots- K, and by tightening them the knife-supports may be firmly held at any suitable point. These slots K are preferably formed through the base of a depressed portion, K, of. the plates K, as will be understood from Figs. 8, 9, and 11.

I prefer to providethe plates K, on their forward sides, with a depending flange, K, which extends below the top of and in rear of the forward rail, J, and at their rear sides with the flange K, which depends in front of the rear rail, J of the base. By such arrangement the supports are held firmly from any displacement laterally to their line of motion.

This may be done by aset-screw turned through the rear end of the knife-clamp and bearing against the base, or other expedients could be employed.

It will be also understood that the pivot of the, knife-clamp might be formed in any suitable manner without departing from the broad principles of our invention. \Ve prefer,however, to pivot said clamp and to elevate its rear end in the manner presently described.- To such end we provide the clamp at the point which it is desired to pivot it with a depending lug, M, provided near its lower end with lateral studs or pins M, and the clamp is provided at or near the upper end of log M with bearings M". The base is provided with a slot, N, of about the width of the lug M.

This slot is provided or formed at or near its I rear end with lateral enlargements or wings IIC the lug M.

In operation the lug M is placed down through the slot N, the studs M passing through. wings N, and the clamp is moved forward to its proper position, the bearings M resting on top of the base and the lugs M below and on opposite sides of the slot N, so as to permit any desired rocking of the clamp in a vertical plane, and yet prevent it from being forced out of connection with the base. By this form of pivot and connection between the clamp and, the base the clamp may be easily adjusted back from the knife-supports when it is desired to place or remove the barvester-knife.

It is preferred to elevate the rear'end of the linife-clamp by means of the lever O, .pivoted a at O, and provided with a wedge, O, which wedge is preferably curved in the arc of a cirv-cle struck from the pivot of the lever. Inopvester-knife. By his arrangement it will be seen the clamp can be firmly locked 'andnnlocked, and we secure by one feature the advantage of both the wedge and the lever-power greatly increasing the force which may be exerted on the harvester-knife and the ease with which the said force may be applied.

In operation the harvester-knife is placed on the supports with its bar rested against the side of same; and the said knife isadjusted longitudinally from time to time as the blades are sharpened, so as to bring new blades into position to be operated on by the grindingwheel.

While the ways J J may be formed on or secured separately to the base A, and theslot N be formed in said base without departing from our invention,we prefer to form the said ways,as well as the outer opening of slot N,in a supplemental plate, P, cast in asingle piece suit-ably secured on the base-plate.

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

1. The combination of the support or standard, the main frame pivoted thereto, ageared drive-wheel keyed to the outer end of the pivotal connection, the supplemental frame pivoted to the outer end of the main frame, a pinion, C, journaled in line with the pivotal connection between the two frames and meshing with the gear of the drive wheel, the grinding-wheel supported on the outer end of the supplemental frame and having its shaft provided with a gear-pinion, G, a gear-pinion, H, meshed with the pinion G, and journaled in line with the pivot betweenthe main and supplemental frames, and keyed to and rotatingwith the pinion G, whereby the grinding-wheel may be revolved in any position of the main or supplemental frame,substantially as described.

2. The combination of the curved support or standard B, the main frame, the supple-' mental frame pivoted to the main frame, the

grinding-wheel journaled in the supplemental frame and having its shaft provided with a pinion, G, the gear H, keyed to the pivotal connection between the two frames and meshed with pinion G, pinion C", keyed to gear H ,and the drive-wheel geared with pinion C and journaled on the pivotal connection between thestandard and the main frame, all substantially as set forth.'.

'3. The combination,with the main frame, .of

the supplemental grinding-wheel frame pivoted to the. main frame and a handle projected from the supplemental grinding-wheel frame in advance of and between its pivotal supports, substantially as set forth.

4. The combination, with the base provided with suitable ways, of the knife supports mounted and movable on said ways, and provided with a slot elongated inthe direction of the lineof adjustment of said supports, and a clamping-screw turned through the said slot into the base, whereby the said supports may be held at any desired point of adjustment,

substantially as set forth. a

5. The combination of the base, the knifesupports, the knife-clamp pivoted midway its length and adapted at its forward end to bear on and secure the knife, and means, substantially as described,whereby toforcibly elevate the rear end of the clamp,whereby its forward end will be caused to bear firmly on the knife, substantially as set forth.

6. The combination of the base providedwith a slot, N, enlarged laterally, as at N, near its rear end, the knife-supports, and the knife-clamp provided midway its ends with a I depending lug, M, adapted to-operate through slot N, and provided on its lower end with lateral pins M and bearings M, arranged at or.near the upper end of the lug M, and

means, substantially as described, whereby toforcibly elevate. the rear end of the knifeclamp, substantially as set forth.

7. The combination,'with the knife-clamp pivoted midway its ends, of the lever 0, provided with a wedge, O, and pivoted to work in a plane substantially at right angles to the movement of the clamp, the wedge being suitably arranged to engage under and elevate the rear end of the knife-clamp, substantially as set forth.

- 8. The combination of the main frame pivotall y supported at one end, the supplemental frame provided in one end with the grindingw-heel and pivoted at its other end to the outer end of the main frame, a handle projected from the supplemental frame in rear of its pivot and inclined outwardly, and suitable gearing whereby to operate the grinding wheel, substantially asset forth.

In testimony whereof we affix our signatures in presence of two witnesses.

Witnesses:

W. H. Kinimnimcicnk, M. KASKEL.

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