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Publication numberUS622794 A
Publication typeGrant
Publication dateApr 11, 1899
Filing dateMar 26, 1898
Publication numberUS 622794 A, US 622794A, US-A-622794, US622794 A, US622794A
InventorsWilliam Brodhage
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 622794 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 622,794. Patented Anr. Il. |899.



(Application led Mar, 26, 1898.)

umlnmllIHIIIIIMIIIIIHMUNI-Humm and thus accurately cutting each tenon.

In the accompanying drawings, Figure l is UNITED STATES PATENT EFICE.



SPECIFICATION forming part of Letters Patent No. 622,794, dated April 11, 1899.

Application filed March 26, 1898.

To a/ZZ whom it Ina/y concern: A j

Be it.known that I, WILLIAM BRODHAGE, a citizen of the United States, residing at Addieville, in the county of Washington and State of Illinois, have invented certain new and useful Improvements in Tenoning-Machines and I do hereby declare the following to be a full, clear, and eXact description of the invent-ion, such as will enable others skilled 4machine is provided with a hollow cutterhead, which is adapted to cut the tenon on the end of the spoke, and a means is provided whereby the said cutter-head is forced a side elevation of the complete machine. Fig. 2 is a top plan view of the machine with the crankc removed. Fig. 3 is a top plan view of the cutter-head with the yoke b removed, and Fig. 4 is a sectional view of the cutter-head cut on the line c a of Fig. 3.

The yoke d forms the'upper portion of the machine. The adjustable clamps c e constitute the lower portion of themachine. The upper ends of the clamps e e are adjustably secured to the lower portion of the yoke d, as will be hereinafterexplained. The cylinder fis hollow and -is provided at its lower end with the cutter-head c, said head being connected tothe cylinder by means of the yoke h. The exterior of the cylinder f is provided with a scale tu, as' shown in Fig. l, and

. the adjustable band g is clamped about the exterior of the cylinder f, the said band g being located near the upper end of the cylinder. The threaded rod h is fixed at its lower end to the upper end ofthe cylinderf, and to the upper end of the threaded rod his fixed a crank-handle d. The rod 71, passes through a perforation in the upper portion of the yoke d and also through the guideplate t' and the rubber washerj. The rubber senti No. 675,309. (No man.)

washerj is located between the upper end of the yoke d and the guide-plate t' and is rethe thread of the rod h, and thus as the crankhandle c, is revolved the said rod h rises or falls, according to the direction in which the said handle isrevolved. The yoke d is provided with the horizontal section d', said sec-` tion having at an intermediate point the bowed sections d, between which the cylinder f passes. Beyond the outer sides of the perpendicular portions of the yoke d the horizontal section d is provided with the elongated perforations d". The upper ends of the clamps e c are secured to the horizontal section d' of the yoke d by means of the threaded bolts and thumb-nuts c, the said bolts passing through the elongated perforations OZ" and the thumb-nuts engaging the upper endsof the said bolts and clamping the parts together. Thus it will be seen that the upper ends of the clamps e may be shifted laterally along the horizontal portion d and secured at any desired position. The lower portions ofthe clamps c are provided with the horizontal sections e and the downwardlyextending sections e'l'. The clamping-blocks n n are secured to the inner sides of the downwardly-extending sections c by means of the threaded bolts and thumb-nuts 0 o, as shown in Fig. 1. The loop p surrounds the downwardlyeXteudin g sections e", the forward ends of the said loop p being secured together by means ot the plate r. through a perforation in the plate r, the inner end of said shaft bear-in g laterally against the side of the nearer downwardly-extendin g section e between clamps c. The cutter-head c is provided in its center with an opening adapted to receive a removable gage-plate y, the said gage-plate y being provided with a central opening, a separate gage-plate being provided for each size of te'non to be cut. Any

suitable means is provided whereby the said gage-plate y is secured in its proper position The threaded shaft s passes ICO in the cutter-head'c. -A block w@ having an upper inclined surface, is located on the upper face of the cutter-headc, said block being adapted to slide longitudinally in the recess w and being held in position by means of the screw (See Fig. 4.) The knife n, is secured at its, upper end by means of the bolt o to the inclined surface of the block fw, the said knife being preferably provided at its upper end with an elongated slot u', the bolt v passing through said slot, the head of the bolt holding the knife in position against the block. The lower end of the knife passes through the opening c in the cutter-head c and a corresponding recess y" in the gageplate y, the inner corner of the said knife being iiush with the surface of the central opening` of the gage-plate y.

In operation the device works as follows: The wheel having the spokes to be tenoned is secured in a horizontal position. Thus the spokes extend horizontally. The end of one spoke is passed between the clamping-blocks n 'n of the clamps e e, and the clamps e e are set to throw the' proper relative positions on the horizontal section d of the yoke d. The shaft s is then revolved by means of the crankhandle t, and thus the lower sections e of the clamps e are' brought together and the machine is attached to the end of the spoke. The threaded pliers 7c are then put in position on the threaded rod hand the crankhandle a is turned. The cutter-head cis then forced downward and causes the knife u to travel in a circular path, thereby cutting the tenon on the end of the spoke. 4The distance that the cutter-head c may be forced downward or the length of the .tenon desired on the spoke is regulated by the adjustment of the band g, which passes around the cylinder f and is clamped by means of the screw l, passing through its two ends.- When the cutter-head c has been forced down until .the band g strikes the horizontal portion of the yoke d and the crank-handle a is continued to be turned, the pliers k will be raised from the frame d, thus gradually pressing the rubber washer j, thereby gradually raising the 4knife u and steadily decreasing the coarseness of its cut until it ceases to take a cut at all, thus insuring a square shoulder on the tenon. The clamping-blocks n n are concaved on their inner faces and are thus adapted to receive any size of spoke.

Having thus described my. invention, what I claim as new, and desire to secure by Letters Patent, is-r A tenoning-machine consisting of a clamping mechanism, a framework carrying said clamps, a screw-threaded rod carrying at its end a cutting mechanism, a stop for said rod and cutting mechanism a means for 4revolving said rod and cutting mechanism, internally-threaded pliers adapted to surround said rod, the thread of the pliers being adapted to engage the thread of the rod, the pliers being normally located against a stationary portion of the framework, a flexible cushion interposed between the pliers and a stationary attachment of the framework.

In testimony whereof I affix my signature in presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6004082 *Mar 3, 1998Dec 21, 1999Lee Valley Tools Ltd.Tenon cutter
US6099211 *Aug 27, 1998Aug 8, 2000Lee Valley Tools Ltd.Miniature tenon cutter
US6099214 *Nov 26, 1998Aug 8, 2000Lee Valley Tools, Ltd.Cutter for use in forming dowels, plugs, and tenons
US6263929Aug 26, 1999Jul 24, 2001Lee Valley Tools Ltd.Dowel maker
Cooperative ClassificationB27F1/10