US391176A

US391176A - mealey

Info

Publication number: US391176A
Authority: US
Publication date: 1888-10-16
Anticipated expiration: 1905-10-16

Description

2 Sheets-Sheet 1.

(No Model.)

J. MEALBY.

MAGHINE FOR SHARPENING ANI) GUMMING SAWS. 139m e om @j w nu.. 1 y /l/ w J of .Wd

INVENTOR i WITNESSES @hm Alum/w ATTORNEYS.

2 Sheets-Sheet 2.

'(No Model.)

J. yMEALEY` MACHINE PoR SHARPENING AND GUMMING sAWs. .No. 391,176.

Patented Oct. 16, 1888.

Y @i N BY Mu/wm WITNESSBS @M ATTORNEYS.

N. PETERS. Ptwwuthngnpmr, wn-hinglon. D. C.

ilNiTe STATES PATENT Fries.

JOHN MEALEY, OF FAIRVILLE, NEV BRUNSVICK, CANADA.

MACHINE FOR SHARPENING AND GUlVllVllNG SAWS.

SPECIFICATION forming part of Letters Patent No. 391,176, dated October 16, 1888.

(No model.)

To @ZZ whom it 11i/tty concern:

Be it known that l, JOHN MEALEY, of Fain ville, in the county of St. John, Province of New Brunswick, and Dominion of Canada, have invented a new and Improved Circular- Saw Sharpener and Gumming Machine, of which the iollowing is a full, clear, and exact description.

The object of my invention is to provide a new and improved machine for sharpening and gumming circular saws of all sizes very rap` idly and effectively.

The invention consists in the construction and arrangement of various parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding` parts in all the iigures.

Figure l isa plan view ot' myimprovement. Fig. 2 is an enlarged face view ofthe saw-rest, and Fig. 3 is a vertical crossscction of my improvement on the line :v x o't Fig. 1.

The main frame A, of suitable construction, is provided with the bed-plate A, on which is mounted near one end the grinding-Wheel which is beveled on its periphery and receives a rotary motion by means of the pulley C and the belt C. On the under side of one end ot' the bed-plate A is placed a segmental slotted arm, D, held against the bedplate A by means ot the bolts D D', which permit a sliding motion of said arm D to or from the bed-plate A. Near the other end of the bed-plate A is pivotally attached the slotted arm F, which reaches over the segmental slotted arm D, and is adapted to be secured to the same by the bolt and nut E and E', respectively.

The saw-rest G is placed on the slotted arm F, and is fastened to the same at any desired point by means ofthe bolt G and the nut G2, as illustrated in Fig. 3. The saw-rest G consists of the shank G, provided on its under side with the aforesaid bolt G', and of the bearing G4, which is pivotall y attached to the shank G5, and ot the saw-clamp holder G5, which is journaled in the bearing G" and provided with a central aperture, i5. (See detailed view,

Figs. 2 and 3.)

thc bearing G by the set-.screw G5, and said holder G5 supports the saw-clamp H, which consists of a recessed plate, H', on the face of which is placed and clamped the saw I by means of the beveled clamping device H2,held centrally on the bolt H3 and pressed up against the saw by the nut H* screwing on said bolt I-IS. The plate H is also provided in its center with a spindle, H5, which extends in an opposite direction from the bolt H5 and lits into the aperture G5 of the saw-clamp holder G5. Vhen the spindle H5 is placed in the holder G5, it can be turned therein and tirmly secured in place by the set-screw G7 screwing in the said holder G5, as illustrated in Figs. 2 and 3.

It will be seen that the saw I can be placed at any desired angle in relation to the grindingwheel B by means of the universal-jointed saw-rest G, so that the teeth of the saw can be sharpened at right angles to the face of the saw or at an inclination to the same, so as to form a beveled tooth. The operator can move the saw to or from the grinding-wheel B by sliding the segmental arm D forward or backward on its bolts D', and the saw I can be turned on its axis, as the spindle I5, placed in the apen ture G6 of the saw-rest G, permits a rotary motion ofthe sawclamp H, and consequently of the saw I.

In order to grind saws of a very large diam eter, I provide an additional slotted arm, J, which is similar to the slotted arm F, and is placed in the slotted extension K, attached by bolts or other means to the segmental arm D. The other cud of the slotted arm J is connected with the slotted arm L, pivotally connected with the bed plate A. The slotted arm J is fastened on the extension K and on the arm L by means of the bolts K' and L and the nuts K2 and L, respectively. The segmental arm D, the extension K, and the arm Lare preferably provided near their outer ends with legs, so as to support the same firmly in a horizontal plane, as illustrated in Fig. 3. To the bedplate A is pivotally secured the rest N, which can be swung to the center of the bed-plat-eA or to the edge of the wheel D, so as to support a saw when the same is being ground.

/Vhen the teeth of the saw have been sharpened in the manner above dcscribed,the saw is gummed by the means presently to be de- IOO scribed. On the bediplate A is held to slide longitudinally a carriage, O,which can be fastened to said bed-plate A by abolt, O, and nut O2. rIhe carriage O is provided with the lugs O3, which project in front of the machine, and on the same is fulcrunied the carrier P, on which is fulcrumed horizontally at P the slotted arm Q, on which is pivoted at its'outer end the downwardly-extending rod R, fitting into a hollow standard, R', provided with a setscrew, R2, so as to fasten said rod R in said standard R, which latter rests on the ground.

It will be seen that the slotted arm Q can be placed in a horizontal or an yinclined position i by adjusting the rod in the slotted standard R by means ofthe set-screw R2. On the slotted arm Q is vheld to slide the plate S, having a lug, S', through which passes the rod T, which can be secured at any point to said lug S by the set-screw S2. The inner end of .the rod T is pivotally connected with one `end of a lever, U, ffulcrumed .on the ,carriage O and serving to move said plate S inward and outward on the slotted arm Q. The plate S supports in its center a standard, S3, provided on `top with an aperture corresponding to the diameter of the spindle H5, so that the :latter can be placed in said standard S, thereby supporting the saw` It will beseen that Ithe saw I, with itsclamp H, -is re-A I, as yillustrated in Figs. 1 and 3.

moved from the saw-clamp holder after the saw is ground and placed in :the standard S3 for gurnming.v

r.Ihe operator, by pressing thelever U in the direction of the arrow a', causes anequal movement of the plate S with the saw I, so that the teeth of the latter are brought in contact-with the grinding-wheel B. The slotted arm Q is placed `insuch an inclined position as to correspond with the inclination which it is intended to give to the edge ofthe saw-tooth.

l Having thus described my invention', what I claim as new, and desire to secure by Letters 1. In asaw sharpenerand gumming machine, the saw-rest G, provided with the shank G3, the bearing G4, and the saw-clamp holder G5, having a central aperture, G, in combination with the saw-clamp H, consisting of the recessed plate H,the clampingteeth H2, the bolt H3, the nut H4, and the spindle H5, which fits into said central aperture, G, of the saw-clamp holder, substantially as shown and described.

2. Inasawsharpener and gumming machine, the recessed plate H', provided with the spindie H5, with which said plate turns, in combi nation with the pivoted clamping-piece Hthe bolt H3, on which said clamping-piece H2 is held, and thenut H4, for screwing said clampingpiece H2 against the saw-blade held on said recessed plate H', substantially as shown and described.

3. In asaw sharpenerand gumming machine, the combination, with a beveled grindingwheel, of the carriage O, held adj ustably on a bedplate, the carrier P, fulcrurned on said carriage, .the slotted arm Q, fulcrumed on said carrier, a plate, S, held to slide on said slotted arm Q, a rod, .'1, adapted to be secured to said lplate S, and the lever U, fulcru med on the carriage O and pivotally connectedwith said rod T to move said plate Sforward and backward, so that the saw supported on the plate S is moved to or from said grinding wheel, substantiall y as shown and described.

JOHN MLEALEY.

Witnesses: I v

EDWARD R. GREGORY, GEORGE MEALEY.