US105760A - bright - Google Patents

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SIMEONM, WRIGHT, or Arnnusouio.

Letters Patent No. 105,760, dated July 26, 1870.

. IMPROVEMENT IN BORING- AND MORTISING-MACINES.

HoF-v I The Schedule referred tojn these 'IlettarsvPatent and making pari: of the sama.

I, SIMEON Mr WRIGHT, of Athens, in the county of Athens and State of Ollio, have invented an Innproved Boring and Mortising-Machine, of which the following is a specification.-

My inventiol'il relates to the combination of the stocks carrying the auger-bit withadjustable-frictionrollers todrive the same, the object of this part of my invention being to canse theaugers'to revolve more smoothly and uniformly than is the case where cogsare employed in driving them. n the accompanying drawing- Figre 1 is a top or plan view of my improved niachine, and y Figure 2, a. vertical section taken in an indirect plane, indicated by the dotted line n: n: of tig. l.

AA A is the stand or frame-work supporting the operatingr parts of my machine. i

B, the driving-shalt,,supported in suitable bearings placed in the lower part ol the trame-work.

0 C are pulleys secured upon'said shaft.

D D, a series ot' li'iction-rollers, arranged horizon'- tally above the stand A A, in contact with each other, and parallel' to the shatt- ,their journals heilig supported in extended bearings formed ,in cross-pieces E E', secured upon the` top ol' the stand or frame A.

The outermost rbllers, D' D", ou each side ot the series, are larger indianeter than those intermediate, and are extended rearwardly through the cross-piece E', to constitute shafts pon which pulleys F F' are v rollers D or D".

placed. 1 l g G G"are driving-belts passing over the pulleys C Oaud F 1l", to transmit motion from the driving-shaft B tothe friction-roller shafts U D".

Upon the frontends of the friction-rollers D,V

projecting through the forward journalpiece E, stocks a q. are secured, t0 receive auger-bits H H, which are arlallgcdto be readily secured to or removed froml said stocks.

Immediately `in front ofthe journal-piece E is arranged a second cross-plate,.I, to receive and hold the rear end of a. hollow mortlsing-chisel, K, (see figs. 1, 2, and 3,) through which t-he angers H project and revolve.- y1hischisel, following the auger, serves to cut out the corners of the mortise after, the angers have cutaway the central portion ot' the aperture, Any size of chisel may be litted in the clamp formed by lthe plate l, to hold the same, s o as to cover orinclose one or more angels, as the size of the mortise shall demand. Where itis desired simply to pierce a, circularl hole, instead of an 'angular inortise, the 'chisel K is entirely removed.v y

The ti-iction ofthe rollers D Djis regulated at pleasure bymeans 0f a set-screw, L, iig. 1,.working horiyrontally against a block, M, (see dotted lines, iig. 1,) which fits and bears againt one of the outer driving S is the carriage or sliding table, or the'machine upon which the timbers to be bored or uiortised are `placed and securedpand N is a clamp operated by a, screw, n, to bind the timber against the inner ledge t of the table, and thus hohl it in place. Y

The table S is supported upon a central har or standard, O, moving vertically in a suitable box', P, which is, in turnsecnred to a cross-picco, Q, sliding horizontally in ways R It, fig. 1, formed on each side ofthe inachine. The table thus admits of' vertical adjustment to any desired height, and has a free horizontal movement to and from the. chisel and bits. y

The table S is secured at such height as may be required l.by means of a bolt,'ll, passing through an aperture iu the box P, and through a. vertical slot in the upright har or standard O, into a nut, c, secured upon the opposite side ot' said standard, as illustrated in fig. 2vofvtl1e drawin". v

The horizontal movementsof' the table S are pro,- duced and controlled by means ot' a `bell-crank lever actua-ted by a suitable tretdle.

Y Y' is the hell-crank lever, secured to a transverse rocking-shaft Z, which constitutes-its pivot.

The shorter arln Y' ot' the crank-lever projects lupward far enough to ent-er a slot formed in the cross-- piece Q, or in a transverse har, q, secured to central Fhars I T, projecting horizontally from the piece Q far enough to pass through slots iua ross-plate,\U, nuder the rear journal-piece E' of tie fi'ictionlrollers, and thus steady its movements.

y The longer arm lY projects .inwardly under the cross-piece U, and is upheld bya strong spiral or other spring, s, secured to the llame-work ot' the machine. When the long 'arm Y of the crank-lever is thus upheld oy its spring, the shorter arm Y is thrown outward, carrying back the tables far enough to bring its rear edge t immediately in front of the hits H and chisel di. l

W is the treadlc-bar, pivoted to a rear support, w, under themachine enough to be within easy reach of the operators foot A when bestands in front oi' the machine, and is attached tothe longer arm Yrf the crank-lever, by

` means of a link, j, so that it is upheld in connection therewith by the spring s;- When pressure is exerted,- however, upon its outer end, to torce it down, it overcomes the resistance of the springs, and, drawing down the longer arm Y ofthe cralilolever, throws inwardxits shorter arm Y', .carrying with it the table S, toward the chisel and bits, with more or less force and rapidity, in proportion to ,the pressure exerted thereon.

I claim as my invention- The combination of' two or morevauger-bits, H, with 'ictiolmollers D. D, arranged and operated `suhstantially as-and for the` purpose herein set forth.

The foregoing spcciticatiou ot' my improved boring and rnortising-lnachine signed by lne this 2d day ot February, 1570.

SIMEON M. WRIGHT. Witnesses: HENRY T. BROWN, A. G. BROWN.-

It'projects forward thence far

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