US1172183A - Machine for sharpening planer-blades. - Google Patents

Description

F. W. WARDWELL, JR. MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20,19I4.

Patented Feb. 15, 1916.

3 SHEETSSHEET 1.

5 K W 4 w WW m 1 y 5 m s /.V m@ M6 F. W. WARDWELL, JR.

MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20, I914.

1,172,1 83. Patented Feb. 15, 1916.

3 SHEETSSHEET 2- F. W. WARDWELL, JR.

MACHINE FOR SHARPENING PLANER BLADES.

APPLICATION FILED APR.20, l9l4.

1,172,183. Patented Feb. 15, 1916.

3 SHEETSSHEET 3.

VI '1- W a H 3 W fi H 1 D 7' g P I 0 O 1 H v I!- 0 1r I 4 7325725. /N VEN 70R FRANK WELLINGTON WARDWELL, JR., OF CLEVELAND, OHIO.

MACHINE FOR SHARPENING PLANER-BLADES.

Specification of Letters Patent.

Patented Feb. 15, 1916.

Application filed April 20, 1914. Serial No. 833,801.

To all whom it may concern:

Be it knownthat I, FRANK WELLINGTON WARDWELL, J r., citizen of the'United States, residing at Cleveland, in the county of Cuyahoga andst ate of Ohio, have invented certain new and useful Improvements in Machines for Sharpening Planer-Blades, of which the following is a specification.

This invention consists in a machine for sharpening planer blades, all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of the machine complete. Fig. 2 is a sectional plan view with a portion of the base broken away and corresponding to a horizontal line axially through the two horizontal supporting tubes. Fig. 3 is a detail of the immediate grinding attachment showing the same in elevation and sectioned axially through the grinder and the axis thereof. Fig. 4 is an end elevation of the machine, looking in from the left of 1. Fig. 5 is a sectional view centrally lengthwise of the near supporting tube in Fig. 1.

The grinder or sharpener for the planer or other blade to be sharpened is indicated by G,and the mechanism shown is intended to be .removably mounted on the planer bed with the grinder in-adjustable working relations with the planer blades so that perfectly true sharpening results may be obtained continuously from end to end of each single blade or the several blades on a single cutter head. To these several ends grinder G is carried by a vertically disposed shaft S in direct actuating relations with an electric motor I, and said parts are supported together on or by means of a head H mounted to travel or slide on the guide baror plate P. The said bar or plate is supported at or near its ends on the two supporting tubes D and D which are horizontally mounted upon the two tubular standards or posts C by means of brackets Z slidably mounted on said standards. The standards C are rigidly socketedin the base B and serve as rigid guide members for the said brackets inany vertical adjustment of said brackets and the tubes D and D thereon. The brackets b are right angled parts and have a clamped relation to both the standards C and the cross pipes or tubes D and D. less the fact that said brackets are slidably mounted on said standards under actuation through the cross connecting plate or member F which rigidly unites said brackets b andhas nuts n fixed on the face thereof for the pair of screws m. A top plate L connects the upper ends of the said standards and has bearings 2 on its bottom for the screws m and a central bearing for the operating shaft M. The said shaft also passes through a lug n on plate F and occupies the central of'three bearings 2 on the base B, and other two bearings being occupied by the ends of the adjusting screws m. The parts B, C and L practically constitute the frame of the machine and all the other parts are supported thereon or therefrom and are movable in respect thereto. Each of the said adjusting screws has a gear 3 on its lower extremity in mesh with a pinion 4 on shaft N beneath base B, and the said gears 3 are alike in size and function and serve to give primary or initial position and relation to the grinder G. Such position or adjustment of the parts is accomplished by raising or lowering the brackets 15 and the carrying tubes D and D on the standards C. F iner-ad justment of the said grinder is more local and comprises means for setting the grinder or the bar carrying the same so that the grinder will work accurately on the same level its entire length of travel and from blade to blade on the planer. Thus, the grinder G is carried by'the two-part shaft S driven by the motor M and supported in a vertically disposed tubular bearing 5 rigid with bracket H and having alength nearly equal to the length of shaft S so as to steady the same. said shaft is, however, allowed a slight measure of axial play under domination ofthe spring 7, which has uniform tension and serves to hold the grinder down to effective work. The said shaft S is therefore made in two parts interlocked, one of which is fixed in the grinder and the other in the motor and the joint provides for positive actuation and is located beneath said spring.

In the finer adjustments of the grinder above referred to I have in mind the fixed relation of guide-bar or plate P in respect to transversetube or pipe D and such adjustment of said plate upon or in respect to the pipe or tube D as will afford a limited adjustment thereon for leveling purposes. This is accomplished by the means seen in Fig. 5, wherein the said plate is shown as secured to the tube D by a tie rod extending The lower portion or section of lengthwise through the tube and threaded into a stud 9 which hasa head bearingagainst the outside of the said plate. A thimble 10 is placed on the said stud and a box 12 threaded on the end of the tube D overlaps said thimble and set screws 14, top and bottom, are inserted through said box and bear on said thimble and serve to make such limited adjustment as the said plate may require to fix its working level. The exact level at any time can be read by the index finger 15 on the indices 16 on box 12, see Figs. 3 and 4. Plate P is rigidly afiixed to tube D and this tube turns in its bracket b and permits the said plate to be raised or lowered at its connecting point with the other tube D. The head H which carries the motor on plate P has ribs 17 or theirequivalent engaging the edges of said plate. In machines of this general kind absolute steadiness and uniformity in the work is of the first importance, and any tremor or chattering or yielding in the grinding parts other than provided for is detrimental. The present machine is therefore built rigid and strong and the different parts all particularly related as shown so as to insure absolute stability of structure and uniformity in operation. The slight adjustments through box 12, and axial yieldin the grinder shaft conserve the operations in these particulars, while the primary adjustment through the two screws -m..fix the position of the grinder G in the main. A hand crank [a on actuating shaft N serves to turn the same and to rotate the screws m simultaneously. Bed plate B is adapted to be fixed in workingposition upon the planer by bolts entered through the several slots 18 therein. The head H which carries the electric motor and the horizontally disposed tubes mounted in said brackets, in combination with means to raise and lower said brackets and tubes comprising a pair of screws supported between said standards and having fixed nuts in the plate connecting the said brackets and means to rotate said screws simultaneously.

3. In a machine for sharpening planer blades, a horizontally disposed guide-bar having a fixed support at one end and an adjustable support at the other end adapted to fix said bar at different levels, in combination with a motor and a sharpening device operatively connected and means supporting the same in a traveling relation on said bar.

4. In a machine as described, a set of horizontally disposed supports, a guide bar pivotally supported at one end by one of said supports and means connected with the other support to level. said bar, said means comprising a stud engaging said bar againstadapted to fix the horizontal position of the bar.

5. In a machine as described, a pair of laterally disposed supports and a guide bar mounted on the free ends of said supports, in combination with leveling means at one end of, said bar comprising a screw rod through the corresponding support and a stud having a head bearing on saidbar engaged by said screw, 2. thimble on'the neck of said stud inside said bar, a box on said support and leveling screws top and bottom through said box having hearings on said thimble.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK WELLINGTON WARDWELL, JR. Witnesses:

R. B. Moses, B. C. TAYLOR.

Images