US66011A - Improved apparatus for boring cylinders - Google Patents

Description

L. B. MANDERS. APPARATUS POR BORING GYLINDERS.

No. 66,011, Patented June 2.5, 186.7.

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TOV ALL WHOM IT MAY CONCERN:

' Bc it known thatI, L. B. FLAN-DERS, of Philadelphia, Pennsylvania, have invented certain Improved Mechanism for Boring Cylinders; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon.

My invention consists of certain devices,'fully described hereafter, to be used in connection with mechanism for boring out horizontal, inclined, or vertical cylinders, without removing them from their foundations. y

In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation. On reference to the accompanying drawing, which forms a part of this specification- Fig'ure 1 is a sectional plan view of my improved mechanism for boring out cylinders, 8vo.

Figure 2, a transverse vertical section on the line 1-2, iig. 1.

Figure 3, a transverse section on the line 3 4, iig. 1, showing the cutting-head.

Figures 4 and 5, enlarged views Vof one of the bearings through which the boring-bar passes.

Figure 6, an outside view of the feeding device, with the case in section; and

Figure 7 a longitudinal section of the feeding device.

Similar letters` refer to similar parts throughout the several views.

lA represents,- a cylinder, from which both heads have been removed, and which, in the present instance, is horizontal. B is the boring-bar, which has a longitudinal groove, a', for apurpose described hereafter. To' the iiange b, at one end of'the cylinder, is secured a cross-plate, C, by means of suitable bolts, c, in such a manner that the said plate can be readily adjusted laterally on the flange. The central portion of this plate C is made in the form of a ring, (iig. 2,) through which pass four set-screws, the latter serving to confine and adjust: within the ring the sleeve D, in which the boring-bar turns. A similar cross-plate, G,'is secured to the flange b of the cylinder by bolts c', and a bearing, E, Vis secured to the same by set-screws. On reference to figs. 4 and 5, it will been that the bearing E, in which the boring-bar turns, consists of two parts, d and d', secured to cach other by bolts e. Between these two parts of the bearing E is a split ring,f, through which the bring-bar passes, this vring being contracted by a screw, f', when it becomes necessary to prevent the barfrom moving endways. In the portion d of the bearing is a conicallrecess, in which ts a conical split ringhg, and

. against the outer edge of the latter bears another ring, g', which has a greater diameter than either of the others, and which s'secured to the bearing-E by` means of set-screws z. By tightening them the split ring is forced into `thc conical recess in the bearing, and its diameter lthereby lessenedf-an operation which becomes necessary, from time to time, as the bearing wears. The cutting-head F is secured by means of a key, jio the boring-bar at any desired point, and is substantially the 4same as that described in my patent of September 20, 1864being provided with three or more outters, 7', secured by means of plates j', (see fig. 3,) and the cutters being maintained at a proper distance from the centre by means of studs la screwing into the hub'Z of, the cutting-head, at the outer end of the boring-bar B, is a cog-wheel, 'm fand the" bar is made tubular throughout a portion of'its length for the reception of the feeding-screw G', which is secured at one end to an adjustable plate, H, which may be boltedto ormay bear againstA any stationary object. The cog-wheel yn, on the end of theboring-bar, is containedin a oasing, I, andjgears into Va cog-wheel, j?, which turns on a pin secured to the case, and the latter wheel gears into au'other wheel, q, .on a hollow spindle, fr, (iig. 7,) into which its a'rod, sf and through and near the end of the latter passes 'a pin,s, which projects from each side of the rod, and through slots formed in the spindle r into grooves t in the cogwheel g.k 4"By the action of a spiral spring, u, on the rod s, the pin s has a constant tendency to remain in these grooves t, but by pressing upon the end of the rod s, the spring is compressed, and the pin c passes from the grooves t into a circular recess in the cog-wheel q, thereby'enabling the latter to turn freely around, and independently of the spindle rf The object of this arrangement willbe apparent hereafter. 0n ,the spindle r, and in another compartment of the casing I, is a cog-wheel, v, and the spindle terminates in a hand-wheel, vl. Gearing into the wheel v is a larger cog-wheel, v2, which turns on a projecting portion of the casing I, andwhose centre coincides with that of the boring-bar'. On the face of the cogwheel ozwis a nut, tu, in which are formed'threads corresponding with thpse cut upon the feeding-screw G. The casing I is prevented from revolving with the boring-bar by means of a'tongue, a', (iig.

projecting from a portion of the casingvinto a groove, x', which extends the entire length ot' the stationary feeding-screw G.

The several partsA having been arranged as described, and the boring-bar and cutting-head moved to that end of thecylinder from which the boring is to commence, motion is communicated to the boring-bar by any suitable appliances. As the boring-bar revolves andthe casing I remains stationary, motion is communicated from the cog-wheel m to the wheel p, then to the wheels g' and v upon the hollow spindle e, and thence to the. larger cogwheel v2, and nut w, thereby causing the casing I, its train of wheels, and the boring-bar to move longitudinally on the stationary screw G. When it is desired to move the boring-bar and cutting-head quickly to any particular point in the cylinder, the Arod s is first forced into the hollow spindle r until the pin s passes from the grooves t of the cog-wheel q into the circular recess formed in the saine; thevhand-wlieel o on the spindle r is then turned, causing the cog-wlieels o and o2 to revolve, while .the wheel q, which has been thrown out of gear, remains stationary. As the` cog-wheel v2 revolves, the boring-bar and cutting-head will be quickly forced through the cylinder by means of the nut w and feeding-screw, without revolving. It is sometimes necessary, in boring a cylinder, to draw back the cutting-bead for the purpose of re-boring a particular part; this may be done, Without-stopping the rotary motion of the boring-bar, by throwing the cog-wheel q out ot' gear.- Tbe wheel m, and consequently the wheels p and q, will continue 4to revolve, but` tliespiiiclle r will remain stationary until operated by the handle el, by nneaiisiot` which, as before described, the cutting-head may be drawn back to the desired point. When the cutting-head has to be used for facing the ends oi flanges of the cylinders, the feeding device is thrown out of gear, and the bar is held stationary by tightening the split ring f.

I claim as my invention, and desire to secure by Letters Patent- 1. The combination of the boring-bar B, the casing I, its train of wheels'herein described, or the equivalent to the same, the nut w, and the stationary feeding-screw Gr, the whole b'eing arranged and operating substantially as described. y

2. The cog-wheel g, its circular recess and grooves t t, in combination with the hollow spindle r and the rod s,vwith its pin s and spiral spring u., the whole being arranged and operating substantially in the manner and for the purpose set forth.

3. The bearing E, in coinbina-tion with the adjustable and conical split ring g md ringg, Op its quivalent, the Whole being constructed and arranged substantially as described,

4. The split ringfin combination with the bearing E, asaiid foithe purpose described.

. s. j f-,-.-,l-M ,.i In testimony whereof I have sigiiediny name to this specification inthe pi esenoe of tno subscribing w itnesfcs@ L. B. FLANDERS.

Witnesses WM. HALL WAXLER, W'. J, R. DELANY.

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