US643471A - Stave-jointer. - Google Patents

Description

No. 643,47l. Patented Feb. I3, |900. J. F. B.' CONNELL.

STAVE JOINTER.

. (Application led Oct. 28, 1899.)

(No Model.)

2 Sheets-Sheet I.

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STAVE JUINTEB.

i (Application led Oct. 28,1899.) (No Model.) 2 Sheets-Sheet 2,

UNITED STATE-s PATENT Ormea.

JOI-IN F. B. GONNELL, OF CALVARY, GEORGIA.

STAVE-JOINTER.

SPECIFICATION forming part of Letters Fatent No. 643,471, dated February 13, 1900.

Application tiled October 28 ,1899. Serial No. 735,033. (No model.)

To all whom it may concern:

Be it known that I, JOHN F. B. CONNELL, a citizen of the United States, residing at Calvary, in the county of Decatur and State of Georgia, have invented certain new and useful Improvements in Stave-Jointers and I do 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.

The invention relates to stave-jointers.

The object of the invention is to provide a machine of this character which shall be simple of construction, durable in use, and comparatively inexpensive of production and by means of which staves may be expeditiously jointed.

To this end the invention consists in certain features of construction and combination of parts, which will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view illustrating my invention. Fig. 2 is a longitudinal sectional View on the line of Fig. 1. Fig. 3 is a cross-sectional view on the line y y of Fig. 2. Fig. 4t is a similar View on the line ,z 2.' of Fig. 2. Fig. 5 is an enlarged detail perspective view of one set of clamping-jaws.

In the drawings the same reference characters indicate the same parts of the invention.

1 denotes the longitudinal side pieces, supported by legs 2, connected together by crosspieces 3. The upper edges of these longitudinal side pieces are provided with curved metallic strips 4, which correspond to the curvature desired to be given to the edge of the stave and may properly be termed formerstrips.

5 denotes a guiderail secured to one ofthe longitudinal side pieces and projecting upwardly above its upper surface.

Arranged between the cross-pieces 3 are two sets of clamping-jaws 6, each set consisting of the rigid jaw a and the longitudinal movable jaw b. The meeting faces of each set of jaws are preferably curved. The movable jaw of one set is connected to the movable jaw of the other set by a longitudinal bar 7, which passes through longitudinal slits 8 in each of the movable jaws and through a transverse guide-orifice 9 in the cross-piece of the frame. Pivots 10 connect the bar to the jaws, so as to permit of a sliding movement of the movable jaws with respect to the bar. By permitting of this movement it will be evident that when the movable jaws are forced to their work they confine the stave between themselves and the fixed jaws, and should the stave be a little thicker at one end than at the other the movable jaws will accommodate themselves to the variance in thickness of the two ends of the stave.

To operate the movable jaws, I pivot a crank-lever 11 to a bracket 12, secured in the side of the rear longitudinal side piece, and connect the crank end to the longitudinal bar by a pivoted link 13. The forward end of this lever is adapted to be heldin a depressed position by a rack-bar 14 and is provided with a hand-grasp 15.

16 denotes a coil-spring which is connected to the upper crank end of the lever and extends through a hole 17 in the rear of the side piece of the frame and is made fast. The energy of the spring is exerted to separate the movable jaws from the iixed ones.

18 denotes the gage, which consists of longitudinal rods 19, pivoted in brackets 2O to the inner face of the rear side piece of the frame. These rods are provided with crankarms 21, which are adapted to be moved upward under the action of coil-springs 22.

23 denotes the plane, having rods 24 to engage the formers and guide the plane along the edge of the stave to be acted upon.

In operation, assuming the movable jaws to be in their normal position, a stave is inserted between the ends of the movable jaws and the fixed jaws and upon the crank-arms of the gage. The stave is now pressed downward until its upper edge is in proper position to be engaged by the plane. While holding the stave pressed downward with one hand against the action of the spring of the gage the operating-lever is depressed, thus moving the movable jaws forward and clamping the ends of the stave between themselves and the fixed jaws, in which position it is held by engaging the operating-lever with its rack.

The plane is now moved back and forth along the ends of the stave until the proper curvature has been given to it. Then by releasing the operatinglever from its rack the jaws IOO will be automatically retracted and the gage will elevate the stave from between said jaws.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of my stave-jointer will be readily apparent without requiring an extended explanation. It will be seen that the device is simple of construction, that said construction permits of its manufacture at small cost, and that it is exceedingly well adapted for the purpose for which it is designed, and it will of course be understood that various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described the invention, what is claimed, and desired to be secured by Letters Patent, is-

l. In a stave-jointer, the combination with the longitudinal side pieces connected by cross-bars and having formers secured thereto; of two sets of clamping-jaws, each set of which is composed of a fixed jaw and a movable jaw, and means for forcing the movable jaw of each set toward the fixed jaw of each set, said means comprising a pivoted springactuated crank-lever, and a bar to which the crank-lever is pivoted, the ends of said bar being pivotcd to the movable jaws, substantially as and for the purpose set forth.

2. In a staVe-jointer, the combination with the longitudinal side pieces of the frame and the cross pieces connecting the same, said cross-pieces being provided with longitudinal slots; of two sets of clamping-jaws, each set comprising the fixed jaw and the movable jaw, a bar connecting the movable clampingjaws and having its ends ext-ending through the slots in the cross-pieces, an operating-lever pivoted to one of the side pieces of the frame and provided with a crank-arm, alink connecting the crank -arm with the bar, a spring connecting one of the side pieces of the frame with the crank of the operating-lever to retract the movable jaws, means for holding the operating-lever in adjusted post tion, and a spring-actuated gage adapted to support the stave while being inserted between the movable and fixed jaw of each set, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand, in presence of two subscribing wi tnesses, this 23d day of October, 1899.

JOHN F. B. CONNELL.

Witnesses:

Il. L. MoELoY, C. W. NAzwoRTH.

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