US342688A - Boring-machine - Google Patents

Description

(No Mdel.) 2 sheets-sheet" 1. l

J. ERNST.

BORING MACHINE,

Noi 342,688. Patented May 25, 1886. l

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J. ERNST.

BORING MACHINE. No. 342,688. Patented May 25, 1886.

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Nrrmo STATES PATENT vTrice.

JOHN ERNST, OF BAY CITY, MICHIGAN.

BomNG-MAcl-HNE..

SPECIFICATION forming part; of Letters Patent No. 342,688, dated May 25, 1886.

Application tiled September 28, 1885.

To all whom it may concern:

Be it known thatI, JOHN ERNST, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful ImprovementsA in Boring-lilaehines; and I do declare the following to be a full,clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which forni a part of this specification.

My invention relates to certain new and useful improvements in the construction of boring-machines, and is especially designed as an improvement upon the Letters Patent granted to me August 7, 1885, N o. 324,100.

This improvement consists, first, in the construction and arrangement of a device for clamping the machine to the timber; second, in an improved means of adjusting the oscillating cutters; third, in the arrangement and location and mode of driving the feedingscrew, and in the construction of the open nut for thesame; fourth, in the attachment of a suitable device for stopping the tool from cutting after a required depth of hole shall have been reached, all the other parts of the meehanism being constructed substantially the same as described in the above-mentioned patent.

In the drawings, Figure 1 is a side View, partly sectional, of a machine embodying my invention. Fig. 2 is an end view of the same. Figs. 3, 4, and dare enlarged detached views of the open nut. Figs. 6 and 7 are enlarged views of a detached portion of the oscillating lever and wedge for adjusting the same. Fig. Sis an enlarged view of the stop shown in Fig. 2. Fig. 9 is a View of the under side of the frame,showing the clamping device. Figs. 10, 11, 12, and 13 are enlarged views of the cutter and a portion of the lever carrying the same. Fig. 14 is a section of the camplate. Fig. 15 is a View of the under side of the cam-plate, showing the bolts holding the plates rigid. Fig. 16 is a view ofthe same with the bolts withdrawn. Fig. 17 is a section of Fig. 15. Fig. 1S is a section of Fig. 16. Fig. 19 is a section at .fr fr, showing bolts holding the cam-plates rigid. Fig. 20 is the same, showing the bolts withdrawn for allow- Serial No. 178,306. (No model.)

ing the cam-plates to revolve with the boringtool.

a represents the bed-pieces of the machine, and b the vertical standards carrying a gate, c, which is held in position by the hooked lugs d, which engage with suitable slides on the front edge of the standards b. The horizontal shaft j' is supported by the gate in proper boxes, and carries the gear-wheel c on its central portion, while at the ends are provided suitable cranks, g, with which to propel the machine. A vertical shaft, h, is placed in the central part Yof the gate c, and properly secured in Vertical bearings, and to the lower end, below the gate, is the socketj, which is attached to the upper end of the boring-tool, and to the upper end of the shaft h is attached a gear-wheel, '13, which intermeshes with the wheel e, the teeth in each being placed slightly skewing or diagonal to allow a shaft, la, to pass the shaft f. rlhis shaft k is secured to or is an extension of the shaft l1', and is provided on its upper portion with a suitable screw-thread, which operates to propel the toolinto the timber. An open nut consisting of the levers s", which are placed with one end pivoted tothe under side of the cross-piece y and,extending forward on opposite sides of the .screw It, is provided with recesses t, which are threaded to engage with the screw k, and at their outer ends are pivoted the one to one end of the lever o and the other to one end of the strap a, the opposite end of the strap being also pivoted to the lever o,in the manner shown in Figs. 4.-, and 5, so that when the lever o" is placed in one position the nut will be closed upon and in engagement with the screw k,

and when in another position (shown in Fig. J

4) the levers s will be thrown apart and the screw will revolve without engagement, and be free to allow the tool to be withdrawn from the hole which it has bored.

By forming the feeding-screw k" upon the upper portion ofthe shaft 7L the machine is rendered much more simple and complete than with the construction described in the IOO bottom thereof the outlets r, through which the oil may pass, lubricating the feed-screw k, and, reaching the gear-wheel 1', it spreads out and lubricates the teeth of the wheels and e, and passing`below reaches the camplate q, where an Oilchamber, w, retains and conducts the lubricant to the cam-groove a", where the rollers are lubricated, and the surplus oil follows the arms m and lubricates the lower portions ofthe boring-tool.

In order to make an adjustmeutfor the cutters n in a side directioml divide the upwardextending arm of the lever m in the manner shown in Fig. 6, the portion in carrying the roller p being secured to the part m by the bolts l, a slotted wedge, wffbeing placed between the parts m and m, and held in position by the bolts l passing through the slots o, so that when the bolts are loosened t-he wedge will slide downward, lnoving the part m outward to the required distance, when the bolts can be turned to hold the parts again firmly together. This adjustment of the parts m outward causes the cutter a to reach farther outward with a side movement, so that should the cutter become worn away on its side it can be adjusted by the above means to cut the hole to the required size in one direction.

At the lower end of thelever m, and on the under side thereof, is provided a chamber or recess,m,into which is placed the upward-ex tending shank a of the cutter n. Curved slots l are arranged in the lever m at the sides of the recess, into which rests the pivots i', which project from the sides of the shank n', and at the upper end of the shank n is arranged a slot, o', into which passes the rcduced part i" of the screw p', the shank n being recessed for receiving the head of the serewwhich is screwed into that portion of the lever beneath the reoessm, and by means of this screw p the shank n may be moved outward or inward as required, and the pivots i', holding the center of the .cutter in rigid position, the shank a is tilted, and the cuttingedge is adjusted to reach forward as the c utter becomes worn away.

Through the bed -pieces a, and across the machine, is placed the guide-bara', having at its outer .end rigidly attached the clampingpiece b', whichr extends downward Vto a short distance below the bottom of the bed-pieces a,

'and is then turned inward and provided with a wedge-shaped end, c', to catch into the timber, or with a turned end, d, which bears against the side of the timber. A clampingscrew, e', passes through the part b and through one of the bed-pieces a, a nut, g', being arranged in the bed-piece which engages with ascrew, a jam-nut, h', being placed on the screw just inside of the piece b', and a crank, s', or a square head, t', is attached to theouter end ofthe screw with which to revolve the same.

I place on one side ofthe machine two of the abovedescribed clamping devices, having the clamping-pieces d extending below the bedpieces a, and on the other side one having the end c. The parts d' are adj usted to bear against the timber when the boring-tool is m a proper position,and then the crank s 1s operated to force the part c into the timber, the part c reahingiu and catching onto an irregular surface and rigidly holding the machine in position.

As shown in Figs. 2 and S,one of the stand-` ards I is provided with holes u', into one of which is passed the screw-threaded shank ar` of a stop, c', a nut upon the shank holding it firmly in position, and an adjusting-screw, w, is passed through the outer portion of the stop in such a manner that when the gate c travels downward one of the projecting lugs d will -catch upon the end of the screw wand stop the downward movement of the gate and boring-tool. The gear-wheel fuis then moved to engage with thc rack w, and the gate 1s raised to its'former position, so that several holes can be bored to the same depth into the timber.

At the bottom or under side of thc gate c is arranged a rigid projecting plate, y', beneath which,with the shaft h passing through their centers, are placed the canrplates q and q', the plate q being provided on its under side with the groove a, and holes are provided through the plate 1 ,aud also through the camplates q and q, into which is passed the bolts u, the upper ends of which are secured to a cross-piece, d, and an upward-extending rod, j, is secured by its lower end to the crosspiece d and passes through a projecting part, c, of the gate c, and a spring, f is coiled around the rod f and arranged with its npper end bearing against the part c and its lower end bearing against the crosspiece d, so that the bolts u will be pushed into the holes in the cam-plates. A prop, e, is pivoted to the cross-piece d, and arranged so that when in a vertical position the end of the prop will bear upon the cam-plate j and lift the bolt u from engagement with the cam-plate q. and allow the cam-plate q to revolve with the boringtool,when a round hole will be produced.

1. In a boring-machine, the combination, with the bed-pieces a, and a clampingarm, d', secured `to the bed-pieces, of a guide-bar, a, passed through the said bed-pieces, a clampingfpiece, b', attached to the outer end of the guide-bar and provided with an inward-extending end, c', a clampingscrew, e', paed through the said piece b', and provided with means of revolving the same, as described, a nut, g', upon the screw and secured to the bedpiece a, all operating substantially as described, and for the purpose set forth.

2. In a boring-machine, the combination, with the oscillating lever m, having at its 1ower end and .under side the chamber m', and recesses Zon the sides of the chamber, of the cutter a, having the upward-extending shank a', adapted to iit into the said chamber, the

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pins fi', projecting from the sides of the shank and resting in the recesses Z', a slot, o', in the upper end of the shank, and a screw, p', provided .with the groove r', resting in the slot o and passing into the lever m, substantially as and for the purpose set forth.

3. In a boringmachine, ahorizontal crankshaft and a vertical auger-shaft situated in a different vertical plane from and geared to the crank-shaft, and having its upper portion, k, extending above the crank-shaft and provided wit-h a screw-thread, and the levers s", pivoted to the upper cross-piece, y, and extending on opposite sides of the shaft 7c, and provided with the screw-threaded recesses t, in combination with the lever o", pivoted by one end to the outer end of one of the levers s, and the strap u, pivoted by one end to the lever o and by their opposite ends to the outer end of the other lever s, substantially as and for the purpose herein set forth.

4. In a boring-tool, the combination, with the lever m, of the upward-extending part m, secured to the upper part of the said lever by the bolts l, and the adj usting-wedgea, placed between the said parts m and m, substantially as and i'or the purpose set forth.

5. In a boring-machine, the gate c, having the plate q rigidly attached to the bottom part 3o thereof, and the cam-plate q, located just be- 6. In a boring-machine, the combination of 4o the cam plate q with an oil chamber, fw, formed in the upper side of the cam-plate and provided with openings communicating with the cam-groove a,and adapted to receive the surplus oil from the shaftabove and feed it to the cam-groove, substantially as and for the purpose specified.

7. In a boring-machine, the combination, with the feeding-screw la, of an oil-chamber formed in the upward-extending end of the said feeding-screw and provided with outlets adapted to feed the oil to the screw, ,substantiall y as and for the purpose specified.

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

JOHN ERNST.

Witnesses:

J. E. THoMAs, W. H. POWER.

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