US1178002A - Grindstone attachment. - Google Patents

Description

P. EKMAN.

GRINDSTONE ATTACHMENT.

APPLICATION FILED NOV. 24. 1915.

1,178,002. I Patented Aim: 4, 1916.

.E COLUMBIA PLANOGRAPH $10., WASHINGTON, u. c.

. nn TED STATES PATENT ormon.

PETER EKMAN, O15 GREELEY, COLORADO.

GR INDST ONE ATTACHMENT.

. Specification of Letters Patent. 7 P t t d Ap 4 1916 Application filed November 24,1915. Serial No. 63,272.

To all whom it may concern:

Be it known that I, PETER EKMAN, a citizen of the United States, residing at Greeley, in the county of Weld, State of Colorado, have invented a new and'useful Grindsto-ne Attachment; and I do hereby 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.

This invention relates 'to an improved grindstone attachment, and aims to provide a tool holder, that is capable of adjustment, so that the tool may be held in order toaccommodate itself to different sized grindstones, and also permit, the operator to move the tool vertically and laterally in opposite directions. I V v 7 Another object of the invention is to pro vide a frame having an angular arm consisting of adjustable sections so that the tool may be held upon various angles, while grinding the same. The sections of the arm are provided with means adapted to be set up or adjusted for holding the sections in different positions.

In practical fields the details of construction may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further'features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings: Figure 1 is a view in perspective of a grindstone frame and the grindsto-ne therein, showing the grindstone attachment or tool holder as applied. Fig. 2 is an enlarged detail sectional view of a portion of the angular sectional arm, showing the ball and socket or universal joint between the tool clamp and one of the sections of said arm. Fig. 3 is a view partly in elevation and partly in section of the frame for supporting said sectional angular arm.

Referring more especially to the drawings, l designates the grindstone frame having supporting legs 2, and the grindstone 3 mounted upon the shaft 4,, which is in turn mounted in bearings 5 on the frame. One end of the shaft 4 is provided with a crank and handle 6, whereby revoluble movement may be imparted to the shaft and grindstone. A rectangular frame 7 is provided consisting of the tubular bars 8, 9, 10, and 11. The lower end of the tube 9 and one end of the tube 10 are connected by the elbow 12. The upper end of the tube 9 and one end of the tube 8 are connectedby the T unioii The upper end of the tube 11 and'one end of thetube S- are connected by the elbow .14, whereas the lower end of the tube lland the end 15 of the tube'lO are connected by the T? union 16. A plate'17 is secured by'screws 18 to the upper face of one corner of the frame 1. This plate '17 has an upwardly extending projection 19, which extends into the T-union 16, so as to swivelly mountthe' rectangular frame7. However, by setting up on the thumb screw 20, the T-union 16 may be adjustably tightened on the projection 19, so as to hold the frame 7 in. adjusted fixed positions. 1

An angular arm 21 is provided, which consists of two sections 22 and 23. One end .of the section 22 has a head 24,, and surrounding. the head to the collar or sleeve 25, which has threaded connections with the threaded enlargement 26 of the section 23, so that by screwing up on the sleeve or colangles to the horizontal plane of the part 27; The part 29 of the section 21 of said angular arm telescopically fits into the T- union 13 so that it may be moved swivelly, thereby permitting the angular arm to swivel upon the frame 7, which in turn may swivel upon the projection 19. By setting up or tightening the'thumb screw 32, the

part 29 maybe held tight and against movev ment in the T-union 13, thereby holding the angular arm in ad usted positions. The section 23 at one end terminates in an integral angular plate 33, upon oneface of which a partial spherical depression, pocket or bear-.

ing 3% is formed. A plate 35 is secured to the enlarged end 36 of the plate 33 by the set screw 37. The plate 35 upon one face has a pair of pins 38 engaging the recesses or bores 39, so as to hold the plate 35 registered with the plate 33. The inner face of the plate 35 has a partial spherical hearing or depression 40, which is directly opposite the depression or bearing 34, so that the two hearings will cooperate against the opposite portions of the ball or spherical member 41 of the shank 42 of the tool'clamp 43. The plates 33 and 35 are drawn tight against consists of the two parts 44 and 45' secured together by the set screw 46, so as to hold the tool, more especially a sickle or scythe blade 47 in the angular recess 48 of the part 44, so as to allow the cutting edge to be held in the proper position adjacent the grindrag surface of the grindstbne. It is to be noted that the blade clamp may be moved universally, for instance vertically and laterally, so that the tool, blade may be moved to different angles relative to the grinding surface. Furthermore, the. angular arm may be adjusted toward and from the grindstone, on its swivel connection in the T- union 13,701 the frame 7 may be adjusted swivellyfu'pon the projection 19, so that the entireangula'r arm and the clamp may be movedtoward and from the grinding surface of the grindstone. Furthermore, the section 23 of the angular arm may be adjusted swivelly, so as to change the angle of the cutting blade or 6001.

spherical member or bore at oneend seated in said spherical bearings, whereby the tool may be moved vertically and horizontally relative to the grinding surface of the grindstone.

In testimony whereof I h Signed y, i Pecificatio'n in the presence of name to two subscribing Witnesses.

PETER EKMAN.

Witnesses Jone? 13.,Gorrnmnnr, J. B. Panties,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ietnts; Washington, D. G.

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