US655753A - Grinding-machine. - Google Patents

Description

No. 655,753. Patented Aug. I4, 1900.

H. w. BOLENS.

GRINDING MACHINE.

' (Application filed Jan 31, 1900.) M BL) 3 Sheets-Sheet l m: News Pains 50.. PHoru-umm wasnmuToN. q c.

(N o Model.)

' Patented Aug. l4, I900. j

H. W. BOLENS.

enmnms MACHINE.

(Application filed Jan. 31, 1900.)

3 Sheets-Sheet 2,

No. 655,753. Patented Aug. l4, won.

:1. w. souzus. GRINDING MACHINE.

(Appl um 11-! 31 1900 3 $heets-Sheet 3,

(No Model.)

WW6 wag Nr'rnn TA HARRY NV. BOLENS, OF PORT IVASIIINGTON, WISCONSIN.

GRINDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 655,7 53, dated August 14, 1900. Application filed January 31, 1900- Serial No. 3,392. (No model.)

To aZZ whom it may concern.-

Be it known that I, HARRY NV. BOLENS, a citizen of the United States, and a resident of Port Washington, in the county of Ozaukee and State of Wisconsin, have invented certain new and useful Improvements in Grinding-Machines; and I do hereby declare that the following is a full, clear, and exact de* scription thereof.

My invention relates to a class'of grindingmachines especially designed for agriculturists, and has for its objects to simplify organization, reduce weight, cheapen production of the particular species of such machines shown in my Patent No. 636,192, of October 31, 1899, Without detriment to their strength or durability, and to provide for automatic reciprocation of the carrier and grinding device when said machines are assembled for grinding knife-sections of mower and reaper sicklebars, said invention consisting incertain peculiarities of construction and combination of parts hereinafter set forthwith reference to the accompanying drawings and subsequently claimed.

Figure l of the drawings represents an elevation of .my improved grinding-machine, partly in section in a longitudinal direction, as indicated by lines 1 1 in the succeeding figure, said machine being assembled for use as a grinder of edge-tools, the grinding-wheel being broken; Fig. 2, a plan view, partly in horizontal section, as indicated by lines 2 2 in the preceding figure; Figs. 3 and 4, elevations, partly in transverse section, as respectively indicated by lines 3 8 and 4: 4 in the first figure; Fig. 5, another elevation, partly in section, as viewed in an opposite direction from the showing in said first figure, the machine being forthe most part assembled for use as a grinder for barrow-disks or ledgerplates of mower and reaperfinger-bars, according to the face of the grinding device employed; but in this same illustration dotted and full lines are utilized to show an assembly of said machine for grinding the knife-sections of mower and reaper sickle-bars Fig. 6, a plan view, partly in section, illustrating a carrier-frame, a grinding device for sicklebar knife-sections, and other details of the machine; Fig. 7, a detail perspective view illustrating one of the joints between what is being made substantially as herein shown to effect a saving in metal, as well as to lighten said machine.

To facilitate attachment of the machine to a convenient support, preferably a stool, the base is provided with a series of screw-holes, as is commonin the art, and, like in the patent aforesaid, a transverse part B of said base is provided with a central groove Z) in a direction longitudinally of the machine for the engagement of a triangular knife-edge rib c v on the under side of a plate 0, cast in one piece with a pair of parallel inclined standards D D, said plate and standards constituting what Iterm the standard-yoke of the machine, it being obvious, however, that the'arrangement of said groove and rib may be the reverse of what is herein shown to provide for rocker-bearing of said yoke on the aforesaid base. Opposing outer lugs d cl of the base and the standard-yoke are bolted together, as in the above-named patent, and by adjustment of the nuts the proper set of said yoke is determined. To insure proper alinement of the standard-yoke in the assembling of the machine, I provide the base with central upper lugs e, facing the extremities of the rocker-bearing groove and rib aforesaid, this being one of the features of my improvements.

The standard D has its upper end provided with a pivot-stud f for engagement of an eye in an end of what is commonly termed the rocker-yoke E of the machine, the bow of said yoke, as herein shown, constituting a handle. The other end of the rocker yoke is provided with an eye loose on a reduction 9 of a spindle w, hereinafter more particularly described, a key-pin 72 being engaged with pivot-stud f of the former standard against a washer t to hold said yoke in working position. A brace j constitutes part of the rocker'yoke, and this yoke is provided with an outer stop-lug k, that plays in an upper IOO recess 'm of standard D when the machine is assembled for sharpening harrow-disks or the ledger-plates of mower or reap'er finger-bars, as hereinafter more particularly specified, this being another feature of my improvements.

Alined outer and inner pivot-studs n of the rocker-yoke engage eyes provided in ends of bars F F, constituting parts of the carrier element of the machine, and by means of a key-pin 0 engaging said outer stud against a washer p the carrier is held in working position. A set-screw G, engaging an inner lug q of the rocker-yoke, constitutes an adjustable stop opposed to a lug 1', extending in from bar F of the carrier, and adjustment of the screw serves to determine the initial elevation of the grinding device I-I (shown in Fig. 6) with respect to the knife-sections of a sickle-bar in' clamp on the machine, as shown in Figs. 5 and 8, so that the points of said knife-sections maybe saved from harm. A stud s on bar F of the carrier engages an eye in the upper end of a removable support I, having an inner foot t, that abuts some of a series of vertical lugs u on base A, and is held in place by the sickle-bar clamp-jaw J, that constitutes part of the machine. As a matter of convenience the support I is provided with upper angular recesses of different widths designed for the engagement of nuts and the head of a bolt that constitute parts of the machine, whereby said support has utility as a wrench when detached from the base of said machine. While I have shown and prefer a construction that provides for connection of the support I with the carrier to hold the latter rigid in the position shown in Fig. 1, it is within the scope of my invention to otherwise accomplish the same result-as, for instance, the stud 5- may be on said support to engage an eye in said carrier.

Like in the patent aforesaid, the free ends of the carrier are provided with eyes that constitute bearings for flanged journals between which a grinding device is clamped. The long journal K for the grinding device L shown in Fig. 3 is interchangeable with the shorter journal K for the grinding device H shown in Fig. 6, and the journal K, common to all the grinding devices furnished as parts of the machine, is provided with sprocket-teeth for a link belt M, the bar F of the carrier being offset at its free end to obtain the necessary space for the latter journal. A bolt N, extending through journal K and adjacent grinding device, has its threaded end screwed into journal K or K, these journals being interchangeable, and the head of said bolt being against said journal K said grinding device is thereby clamped in working position by a pair of said journals to turn with the same and said bolt, provision being had for the side thrust desirable in machines of the kind to which my improvements relate. The interchangeable journals and the bolt, that has its threaded end screwed tions.

into oneor the other of said journals, have been heretofore disclosed in the application of John Gilson, Serial No. 736,035, filed November 6, 1899, and I make no claim for same.

The link belt M is driven by a sprocketwheel 0, that runs loose on an outer stud v of the rocker-yoke and is provided with a pinion-hub O in mesh with a spur-wheel P, fast on the aforesaid spindle to, that turns in standard D and its branch D, this spurwheel being provided with a crank.

The aforesaid clamp-j aw J is provided with stilt-lugs cc and a longitudinal slot y, this slot being engaged by a bolt Q, that extends up through the base A, and run on the bolt against the upper surface of said clamp-jaw is a thumb-nut R, by which pressure is had to bind a sickle-bar S tight against said base and the vertical lugs u thereon, as shown in Fig. 5, knife-sections T of the sickle-bar being supported by rests U, rising from the aforesaid base, the elevation of these rests being such that the angle of said knife-sections is approximately parallel to that of the plane of reciprocation on the part of the carrier and grinding device H therewith, it being understood that the support I is not in use when the machine is assembled for the purpose of sharpening said sickle-bar knife-sec- It is also to be understood that one long lug instead of a series of lugs u, at in-- tervals may be utilized to abut the sicklebar. The distribution of weight and leverage of the rocker-yoke, carrier, and grinding device H is such that no tension-spring is necessary in connection with said carrier, the doing away with such a spring being also a feature of my improvements. It is also to be noted that when the machine is assembled for sharpening knife-sections of sickle-bars the rocker-yoke, with the carrier (when free) and grinding device, may be swung back by the operator until the stop-lug 7c of said yoke comes in contact with a projection a of standard D, and thus said grinding device willbe, well up out of the way. I

As shown in Fig. 4, a pinionV is made fast on reduction g of spindle w by a key-pin b, and, as shown in said'Fig. 4 and in Fig. 8, this pinion meshes with a spur -wheel W, that turns loose on a stud c,with which the standard D is provided. Wristed to' the spurwheeljs a pitman X, made to have detachable connection with a stud e of rocker-yoke E, as shown in Figs. 4 and 8; butit may be made to engage a cross-piece f of the carrier, as shown by dotted lines in said Fig. 8. Either connection being established,said carrier and the grinding device H therewith will have automatic reciprocation when the machine is operated. It is also shown in Fig. 8 that provision may be had for varying the length of stroke on the part of the pitman.

When the machine is assembled with a grinding device such as shown in Figs. 1 and 3, it is utilized for sharpening edge-tools, but when needed for sharpening barrow-disks or the ledger-plates of a mower or reaper fingerbar the pinion V is removed and the pitman X placed in working position, the rockeryoke being detached from the standard-yoke and again connected to the same in shifted position, so as to have its stop-lug 7b engage the recess m of the standard D, said rockeryoke and carrier being then positioned as shown. by full lines, Fig. 5. A grinding device V of proper face for the work in hand being journaled in the carrier,- the latter in the new assemblage-is manipulated to bring said grinding device in and out of contact with the surface or surfaces to be sharpened, the pivotal play of said carrier being limited by its lug r in opposition to the rocker-yoke, and by reason of the engagement of lug 7x3 with the standard-recess m said yoke (with said carrier and said grinding device) may be lifted a limited distance from the position shown in Fig. 5 to increase clearance between said surface or surfaces and the aforesaid grinding device whenever necessary or desirable.

A continuous rod may be substituted for the studfand spindle w, and it is possible to otherwise vary the details of the machine without departure from my invention.

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

1. A grinding-machine of the species de* scribed having its base and standard-yoke in rocker rib and-groove connection, means for determining proper set of said yoke, and lugs on said base facing the extremities of the rocker rib and groove.

2. A grinding-machine of the species described having its standard-yoke provided with an upper recess and its rocker-yoke provided with a lug engaging said recess in one assembly of the machine, a projection of said standard-yoke at the upper terminus of the aforesaid recess being in the path of said lug in another assembly of said machine.

3. A grinding-machine of the species described provided with a removable support held in working position bythe sickle bar clamp mechanism of said machine, and means for holding the carrier element of the machine in rigid connection with the support at a predetermined elevation.

4. A grinding-machine of the species described having a removable part in the form of an angularly-recessed device by which the carrier element of the machine is supported in a predetermined position, said device being held in working position by the sicklebar clamp mechanism of said machine.

5. A grinding-machine of the species described having a standard thereof provided with a stud, a spur-wheel loose on the stud, a pinion fast on the drive-Wheel spindle of the machine and in mesh with the spur-wheel, a rocker-yoke in connection with the machine-standards, a grinding-device carrier in pivotal connection with the rocker-yoke, and a pitman in adjustable throw connection with the aforesaid spur-wheel and rockeryoke.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

HARRY W. BOLENS. Witnesses:

N. E. OLIPHANT, B. O. ROLOFF.

Images