US2621547A

US2621547A - Sharpening device with adjustable work support guides

Info

Publication number: US2621547A
Application number: US256753A
Authority: US
Inventors: Blackwell K Murchison
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-11-16
Filing date: 1951-11-16
Publication date: 1952-12-16
Anticipated expiration: 1969-12-16

Description

1386- 151552 B. K. MURC HISON 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16, 1951 I 4 Sheets-Sheet l INVENTOR. -2

BLACKWELL K. MURCI'HSON TTORNEY B. K. MURCHISON Dec. 16, 1952 SHARPEINING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16, 1951 4 Sheets-Sheet 2 INVENTOR. BLACKWELL a.

MURCHLSON ATTORNEY Dec. 16, 1952 u c lso 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16, 1951 4 Sheets-Sheet 3 JNVENTOR.

BLACKWELL K. MURCHISON I5 I7 E ATTORNEY Dec. 16, 1952 u c so 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16, 1951 4 Sheets-Sheet 4 INVENTOR.

BLACKWELL K. MURCHISON ATTORNEY Patented Dec. 16, 1952 UNITED STATES TENT OFFICE SHARPE-NING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES 11 Claims.

This invention-relates to newv and useful improvements in sharpening devices with adjustable work. support: guides.

More particularly, the invention proposes a work support; guide having a horizontal work support. face normally positioned substantially tangential of: the. top point of theperiphery of a driven cylindrical sharpener wheel. A novel construction and: arrangement is proposed by which said work support guide may be tilted to selected angular positions in order to hold the work at-selected angularpositions in relation to hesperiphery'of said sharpener. The new work support; guide is particularly intended for cut-- tin rinding; honing: and finishing of knives, scissors, cleavers, razors, and many other articles.

More specifically-it-is proposed to provide the work support guide with a vertical flange extending parallel, to the: axis of rotation of said driven cylindrical sharpener wheelandisaid flange to be pivotally supported upon an axis at right angles to said first mentioned axis in. order that said work guide may be tilted about said second mentioned axis tovary-saidhorizontal work support face to' various angular positions in relation to the top point of the, periphery of said sharpener wheel.

A- still further object of this. invention resides in notching out the centralsection of the work support guideso that the sharpener wheel is readily accessiblein the various tilted positions of the work support guide.

Still another object of this invention resides in providing the said flange of the work support guide with a circular platehaving gear teeth along its edge coaxially mounted onsaid flange, and providing a pinion meshing; with, said gear teeth, and turning means for turning said pinion.

Another object of this invention resides in characterizing the turning means; supra, by arod supporting said pinion, a radial handle on said rod, andan arrangement for holding said radial handle in various turned positions for controlling the. turned positions ofsaid flange.

Still another object of-this invention resides in the provisionof a resiliently mounted-Work guiding head adjustably supported upon theefiange of said work support guide and normally positioned abovesaid driven cylindrical sharpener wheel for assisting in guiding work against said sharpener wheel;

More specifically, it is proposed that said guiding head be supported on a resiliently mounted plunger. which in turn. is supported on adjustable 2; arms in order that the guiding head may be moved into and out of operative positions so that itmay be used when desired and also idled.

A. further object of this invention. resides in mounting said adjustable arms on a vertical stem which is turnably mounted in order that said ad'- justable arms may be movedto variouspositions. Meansv is also proposed for locking said stem in selected turned positions for correspondingly holding said adjustable arms.

Still further the invention proposes a sharpening devicewith an adjustabl'e'work, support guide and: a cooperative work guiding head which may be manufactured and sold.- atareasonable-v cost.

For further comprehension, of the invention, andaof theobjects and advantages thereofireference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel. features of the invention are moreparticularly set forth.

In the accompanying drawings forming, amaterial' part of this disclosure:

Fig. 1 is a plan view of: a-sharpening devicewith anv adjustable work; support guide and: cooperative work'guiding head constructed in accordance with this invention.

Fig. 2 is a fragmentary front elevational view of Fig. 1.

Fig. 3 is an end view of Fig. 1 looking from the right hand end.

Fig. 4 is a fragmentary rear view looking in the direction of the line 4-4 of Fig. 3.

Fig. 5' is a fragmentary longitudinal vertical sectionalview taken on the'line- 5-5 of Fig. 1.

Fig, 6 isa fragmentary transverse vertical sectional View taken on the line 6'-6 of Fig. 1.

Fig. '7 is a fragmentary horizontal sectional view taken on the lineL-I of Fig. 6-.

Fig; 8 .is.a fragmentary transverse: vertical'sectional' view taken on the line. 8--8-of Fig; 1.

Fig. 9 is a fragmentaryvertical sectional view taken on the line 9-9 of Fig; 1.

Fig. 10 is a fragmentaryelevationalview similar to Fig. 2 but illustrating the adjustable work support guide and: cooperative work'guiding head in a difi'erentuposition of "adjustment.

The sharpener device with adjustable work support guide, in accordance with this invention, includes a driven cylindrical sharpener wheel [0 having a horizontal axis of rotation coinciding with the axis of a horizontal shaft l I upon which the-wheel H3 is fixedly mounted. The sharpener wheel It has a sharpening periphery'formed by the outer edges of a plurality of radial cutters l2 which are fixedly mounted on a cylindrical body H of the wheel Hi. These radial cutters l2 extend parallel to the axis of the sharpener wheel I8. Preferably, the cutters |2 are formed from "Carboloy or other hard materials. The shaft H is rotatively supported in spaced standards l4 which are formed on a frame l5 mounted on a body It for the sharpening device. The body l5 has a horizontal top wall I] upon which the frame I5 is fixedly mounted.

The body It also has a hollow base portion l8 provided at the bottom with flanges |9 by which the body |5 may be attached to a Work table or other stationary part. The body I6 is also provided with shield-like end portions 28 engaging upon the end portions of the shaft One of these shield-like end portions 20 has a removable end plate 2| to give access to a drive pulley 22 mounted on the shaft The drive pulley 22 is driven by a belt 23 which engages a small pulley 24 upon the shaft of an electric motor 25 which is mounted within the hollow base portion l8. A collar 26 is removably mounted on the shaft outside of one of the standards M for holding the shaft i from moving sidewise in conjunction with the pulley 22 which engages against the other standard l4.

A work support guide 33 having a horizontal work support face 3| is normally supported substantially tangential of the top point of the periphery of said sharpener wheel by a vertical flange 32. More specifically, the vertical flange 32 is pivotally mounted upon a stud 33 which forms its axis. This stud 33 is mounted on a projection 34 from the frame I5. The work support guide 30 is formed with a notched out central section 35 (see Fig. 1) in order to make the top portion of the sharpener Wheel l0 readily accessible to work placed on the work support guide 36. The work support guide 30 also is formed with inclined sides 36 in order to reduce the width of the front portion thereof to facilitate tilting of the work support guide 30. The notched out central section 35 extends along the sides of the sharpener wheel as. A front guard 37 is also mounted upon the frame and extends over a top portion of the sharpener wheel ID in order to protect the fingers of an operator of the sharpening device from accidental injury. This front guard 37 is positioned on the opposite side of the sharpener wheel I 5 to that held by the work support guide 30.

The flange 32 is associated with means by which it may be adjusted to various turned positions upon its axis, namely, the pivot 33. This adjusting means includes a circular plate 38 having a series of teeth 39 along its bottom edge. This plate 33 is fixedly attached to the flange 32. A pinion 45 meshes with the teeth 39, and said pinion 40 is mounted upon a rod 4| which is turnably mounted through the frame i5. A radial handle 42 is mounted on the end of the rod 4| which is remote from the pinion 4B. A plate 43 is attached to the frame I5 adjacent the handle 42. A plunger &4 is mounted on the handle 42 and is urged into an inward position by a leaf spring 45. The inner end of the plunger 42 is engageable with one of a series of openings 46 formed in the plate 43 upon an arc coaxial with the rod 4|. The leaf spring 45 is attached at its bottom end by a set screw 41 to a bottom portion of the handle 42. The leaf spring 45 extends into a slot 48 formed in the top portion of the handle 42. The top end of the leaf spring 45 engages through a small opening in the plunger 44 in order that the leaf spring 45 may urge the plunger 44 towards the openings 46. The

plunger '44 is provided with a knob 49 by which it may be easily moved. The handle 42 may be turned to various positions in order to turn the rod 4| and pinion 40 which will turn the plate 38, the flange 32, and in this Way the work support guide 35.

A resiliently mounted work guiding head 50 is adjustably supported indirectly upon the flange 32 and normally is positioned over the sharpener wheel ID. More specifically, the work guiding head 50 is mounted upon a vertical plunger 5|. This plunger 5| engages through a tubular portion 52 upon the end of a radial arm 53. A collar 54 is mounted upon the top of the plunger 5|. A coaxial spring 55 is mounted upon the bottom portion of the plunger 5| and acts between the tubular portion 52 and the head 50 for resiliently urging the head 50 into a downward position.

The radial arm 53 is horizontally pivotally mounted upon a horizontal flange 56. The horizontal flange 56 is fixedly mounted on a vertical post 57. The fiange 56 is provided with a peripheral cutout 58. A pin 59 is mounted on the radial arm 53 and engages the cutout 58 the ends of which limit horizontal pivoting of the radial arm 53. The post 57 is provided with a top stud 50 equipped with a clamp nut 6|. by which the radial arm 53 may be stationarily clamped on the flange 58. The vertical post 57 is fixedly mounted upon the outer end of another radial arm 62. This radial arm 62 also works in a horizontal direction. It is fixedly mounted on a vertical stem 63 which is turnably mounted upon a horizontal tube 64 which is coaxial with the flange- 32. This tube 64 is fixedly attached to the plate 38 in order to turn as the plate 38 is turned. The horizontal tube 64 is provided with a recess 65 in which the head of the stud 33 engages.

Means is provided for locking the vertical stem 63 in selected turned positions. This means includes a. plunger 66 engageable selectively with openings 67 and 63 formed in the stem 63. The plunger 66 is slidably mounted through a nut 69 threadedly' engaged on a tube 70 which is mounted upon the outer end of the horizontal tube 64. The plunger 66 is provided with an enlarged portion 7| which is engaged by an expansion spring 72 housed within the tube 70 and acting between the portion 7| and the nut 69, for normally urging the plunger 66 inwards. The outer end of the plunger 66 is provideid with a head 73 by which it may be opera e The operation of the device may be understood from the following:

The sharpener wheel I0 is rotated by the electric motor 25 which drives the shaft ll upon which the sharpener wheel H) is mounted. The work support guide 30 is in a normal or neutral position when its support face 3| is in a horizontal position. It is illustrated in this" neutral position in all of the figures of the drawingexcept Fig. 10, in which it is shown in a tilted position. A knife or other piece of Work to be sharpened may be rested upon the work support face 3| of the guide 30, as indicated by the dot and dash lines A in Fig. 2. However, in the horizontal position of the support guide 30, merely the faces of the work A may be brought into contact with the sharpener wheel H] which at its top projects very slightly above the support face 3|.

If it is desired to sharpen or cut the beveled edges of the work A it is necessary that the work support guide 31 be tilted to a selected angle. It may be tilted by gripping the handle 49, pulling the plunger M out from one of the openings 4%, and then turning the handle 42 to a desired selected position and re-engaging the plunger 44 into another one of the openings it. When the handle 42 is turned, motion will be transmitted to the rod M, the pinion 4!], the plate 38, the flange 32, and thus to the work support guide 3 I. In Fig. the work support guide 3!] is illustrated in an inclined position. The dot and dash lines B illustrate another piece of work rested on the work support guide 39 and in a position in which one side of the bevel of the work B engages against the top of the sharpener wheel {6. The work B may be moved transversely, that is, in a direction at right angles to the axis of the sharpener wheel Iii. When thus moved the longitudinal edge of the work 13 will be moved across the top portion of the sharpener wheel it) which sharpens, cuts, or treats the edge of the work B.

The resiliently mounted work guiding head 50 normally engages against the work B and assists in properly supporting the work as it is moved across the sharpener wheel id. The bottom face of the work guiding head 5% is rounded in order that the work B may be properly engaged between the head 50 and the guide 36. Whenever desired the Work guiding head 5!! may 'be swung to an inoperative position, as for example, indicated by the dot and dash lines C in Fig. 1. In order to so swing the guiding head 50 it is merely necessary to first loosen the clamp nut 6! and then pivot the radial arm 53 to a position in which the pin 59 on the radial arm 53 strikes the other end of the cutout 58 formed in the flange 55. The

radial arms

62 and 53, as illustrated by the full lines in Fig. 1, are shown directed towards the right. When these arms are in this position the work is moved transversely across the left hand portion of the sharpening device.

When it is desired to sharpen the other side of the bevel of the work 13 it is necessary that the radial arms s2 and 53 he swung over towards the left. This is done by first gripping the knob 13 and pulling outwards on the plunger 66 to free the stud 63. Now the arm E52 may be swung over to the left, as indicated by the dot and dash lines D. The arm 62 is locked in this position by releasing the head l3 so that the spring 62 may engage the plunger in the opening 68, see Fig. 7. Now the arm 53 may be moved to a position in which the work guiding head 53 is over the sharpening Wheel H), as illustrated by the dot and dash lines E. If desired, the radial arm 53 may be swungbackwards to an inoperative position corresponding with the position indicated by the dot lines in Fig. l which are referred to by the reference letter C. When the

arms

62 and 53 are directed towards the left the work may be moved transversely across the sharpening device in a right hand position.

It should be particularly noted that because the Work guiding head 53 is indirectly mounted :on the flange all adjustments of the Work support guide it will be transmitted to the work guiding head 56 so that the work guiding head 50 is always adjacent the work guiding support 30 and ready to assist in guiding a knife or other piece of work being sharpened, out or treated on the sharpening device.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed, and the right is reserved to all changes coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. A sharpening device with an adjustable Work support guide, comprising a driven cylindrical sharpener wheel having a horizontal axis of rotation and a sharpening periphery, a Work support guide having a horizontal work support face normally positioned substantially tangential of the top point of said periphery and also having a vertical flange extending parallel to said axis and pivotally supported upon an axis at right angles to said first mentioned axis in order that said Work guide may be tilted about said second mentioned axis to vary said horizontal work support face to various angular positions in relation to the top point of said periphery, means for adjusting said flange to various turned positions upon said second mentioned axis, and a resiliently mounted Work guiding head adjustably supported upon said flange and positioned over said wheel.

2. A sharpening device as defined in claim 1, in which said horizontal work support face has a notched out central section through which said sharpener wheel is accessible.

3. A sharpening device as defined in claim 1, in which said vertica1 flange is pivotally supported upon a horizontal pivot.

i. A sharpening device as defined in claim 1, in which said means for adjusting said flange, includes a circular plate with gear teeth along its edge coaxially mounted on said flange, a pinion meshing with said gear teeth, and turning means for turning said pinion.

5. A sharpening device as defined in claim 4, in which said turning means includes a rod supporting said pinion, a radial handle on said rod, a stationary plate with a series of openings coaxially of said rod, and a plunger on said radial handle engageable selectively with said openings.

6. A sharpening device as defined in claim 5, in which a spring urges said plunger into said openings.

7. A. sharpening device as defined in claim 1, in which said work guiding head is mounted on a resiliently supported plunger.

8. A sharpening device as defined in claim 1, in which said work guiding head is supported on a resiliently mounted plunger, and said plunger is supported on adjustable arms.

9. A sharpening device as defined in claim 8, in which said adjustable arms are mounted on a vertical stem turnably mounted.

10. A sharpening device as defined in claim 9, in which said vertical stem is associated with means for locking said stem in selected turned positions.

11. A sharpening device as defined in claim 10, in which said means for locking said stem includes a spring pressed plunger engageable with openings in said stem.

BLACKJVELL K. MUBCHISON.

No references cited.