US1204576A - Boring-machine. - Google Patents

Description

M. G. LAMB.

BORING MACHINE. M rLlcATlou FILED umso. ma.

2 SHEES-SHEET 2.

Snom/vio@ M. C .LAME

Patented Nov. 14, i916.,`

UNITED sTA'rEs ,PATENT OFFICE.

MUSE G. LAMB, OF SIKESTOYN, MISSOURI, ASSIGNOR T0 JOHN ADAMS, 0F SIKESTON,

MISSOURI. l

BORING-MACHINE.

Patented Nov. 14, 191e.

Application led December 30, 1915. Serial No. 69,427.

To all whom it may concern: Be it known that I, MosE character especially designed and adapted for use for boring cylinders or the like, and it is an object of the invention to provide a 'machine of this general character having nove-l and improved means whereby it may be applied into operative position with convenience and facility and maintained in such position by the cylinder with which it is adapted to coact.

Furthermore, it is an object ofthe invention to provide a machine of this general character having novel and improved means whereby the direction of travel of the boring bar may be effectively and conveniently controlled. f

It is alsoy an object of the invention to provide a novel and improved machine of this general character whereby the guides for a Ycross head may be bored simultaneously with the boring of a cylinder.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved boring machine whereby certain 1mportant advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fullv set forth.

The novel features of the invention will be carefully'defined in the appended claims.

In order thatmy invention may be the better understood, I will now proceed to de scribe the same with reference to the accompan-ying drawings, wherein- Figure boring machine constructed 1n accordance with an embodiment of mv invention and in applied position; Fig.` 2 is a view in elevation of the outer face of my improved boring machine; Fig. 3 is a transverse sectional view taken through a cylinder showmg a cutter head constructed in accordance withv G. LAMB, a citi-v4 zen of the Umted States, residing at Sikes-` l is a sectional View illustrating aan embodiment of my invention coacting therewith; Fig. 4e is a transverse sectional view taken through thereversing or feeding mechanism as herein included; Fig. 5 is a longitudinal sectional view taken through the reversing or feeding mechanism, with the boring bar shown in fragment and in elevation and an adjacent' portion of the frame in section; Fig; 6 isa fragmentary view, partly in elevation and partly insec'-I tion, illustrating certain kdetails of construction as herein'embodied; Fig. 7 is a fragmentary view in-section of a slightly modiied form of my invention especially as relates to the centering of the'boring bar; Fig.

8 is a detail view partly' in elevation and partly in section illustrating a further means for centering the boring bar; and Fig. 9 is a sectional view taken substantially on the line 9-9 of Fig. 8.

As disclosed inl the accompanying drawings, C denotes a cylinder of conventional type adapted for use in connection withv a rectilinear piston and G denotes conventional guides for a cross head as generally included in an type.

When it is desired to bore the cylinder C, the outer cylinder head and piston are removed and 'the frame F of my improvedengine of a reciprocating boring machine is secured directly to the open end of the cylinder.

The frame F, as herein embodied, comprises the .overlying plates 1 and 2 main tained in'xed spaced relation by the clamping bolts 3 and the interposed sleeves 4 embracing said bolts. The plates 1 and 2 are provided with the alined openings 5 arranged at the axial center of the cylinder C when the frame is in applied position and disposed through said openings 5 is the boring bar .B, said boring bar being of a length materially in excess of the length of the cylinder and directed through the stuifing box S of lthe cylinder C whereby it will be perceived that the boring bar B is effectively maintained inoperative position rotate in unison but permits an independent l l to a source of power.

A djustably mounted upon the boring bar B is the knife head 1G, herein disclosed as being-,provided at its axial center with an opening 17 through which the bori'nxr bar B is disposed and said opening 17 is defined by an annular flange 18 ,through which the clamping bolts 19 are disposed for engage- Y ment with the boring bar B whereby it will be perceived that the knife head 16 may be edectively clamped at a predetermined point longitudinally of the cutter bar B.

j At opposite sides of its axial center the knife head 16 lis provided with the loops 20 through whichthe knives or cutters 21 are directed, said knives being maintained Jin predetermined adjustment through the medium of the clamping screws threaded through the loops 20 and` engaging the knives `or cutters, said lrnives being-so adjusted as to effectively engage the inner wall of the cylinder 2 so as to properly bore the same. rlhe cutter head is provided at a point in alinernent with each set of loops 2 with a lug through which is disposed the set screw 24 engaging the inner end of a knife 0r cutter l21 sothat the same be readily and effectively adjusted in an out ward direction.'

If desired, the boring bar B may be of such a length as to extend beyond the. guides G for the cross head and in which event the bearing cap 25 is detachably engaged with the guides G through'the medium of the clamping screws 26, said bearing cap 25 t serving 'as an' additional support for the boring bar B, The portion of the'boring vbarhB interposed betweenthe guides G has secured thereto the knife head 27 of a conmv struction preferably similar toV the head 16 andsaid head 27 has coacting therewith the The caps 29 and 33 are` provided with the equidistantly spaced radial slots 34 preferably four in numberand in which are arranged the extremities of the shafts 35 having mounted thereon intermediate their lengths the rollers 36 adapted to engage the periphery of the boring bar B,

lt has been fully demonstrated in practice that upon imp'arting aXial rotation to the upper cap 33 in the requisite direction, the resultant inclinationof the rollers 36 will so contact withthe boring bar B as to cause the same to feed ortravel inwardly or'outwardly relative to the cylinder C.

As herein disclosed, l ailix to the upper cap 33 the operating lever or handle 37 provided wit-h a spring latch 33 of conventional construction adapted to coact with the spaced perforations producedfin the upper portion of the cylinder 30, whereby the rollers will be locked in their various adjustments.

ln order to impose the requisite tension upon the shafts so as to cause the rollers 36 to effectively engage the boring bar B, l dispose through the cylinder 30 at points above and below the rollers 35 the set screws 39 having their inner extremities provided with the springs 40 bearing against the shafts 35 whereby it will be perceived that equal pressure is imparted tothe rollers 36 irrespective of the angle of adjustment of the shafts 35. p j

I have found it of particular advantage Vand as especially illustrated in detail in Fig. 7, to provide an independent cone bearing 41 through whichthe boring bar B may be disposed and it is to be noted that said bearing 41, owing to its formation ccacts with the stuling box 42 in sucha vmanner as to bring the boring bar B to a true center at the adjacent end of the cylinder C. I also find it of advantage to provide at the end of the cylinder adjacent the frame F additional means whereby the proper centering of the boring bar B may be assured. As illustrated in detail in Figs. 8 and 9, I employ a conventional centering device including the dogs 43 c'oacting with the cylinder C in a conventional manner and properly adjustable through the medium of the screws 44, said dogs 43 and screws 44 being carried by the head 45 which -is preferably in the form of Va. spider' comprising four arms 46.

From' the foregoing description, it is thought to be obvious that a boring machine constructed in "accordance with my invention is of an extremely simple .and comparatively inexpensive nature' and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my' invention is susceptible of some change and modification without material departure from the scope ofthe claims l and for-this reason I do not Wish to be understood as limiting myself to the precise arrangement and rformation of the several parts herein shown in carrying out my invention in practice except as required by thev scope oi the appended claims.

l .I claim: A

l. A. boring machine 'for cylinders and the like comprising a frame adapted to be vsecured to the cylinder, a boring bar disposed through the frame `and mounted for axial rotation and for endwise movement, cutting means carried by the bar, means for rotatin the bar', rollers mounted for contact iv the bar, and means for inc-lining the axes of theI rollers relative to the bar whereby the longitudinal movement of the bar may be controlled. y

2. A boring machine including a boring 'ba-r arranged for aXial rotation and endwise movement, a cylinder surrounding` the bor- 'Jing bar and-concentric thereto, heads for the opposite ends of the cylinders, one of said heads being capable of4 rotative movement, each of said heads 'being provided with slots, shafts mounted in said slots, rollers carried by the shaftsengageab'le With ythe bar, and meansfor imparting movement to the rotative head for inclining the axes ofthe rollers relative to the bar whereby the longitudinal movement of the bar may be controlled.

SQA boring machine including ar boring .bar arranged for axial rotation and endwise i Copies'of this patent may be obtained for five cents each, liyaddressing the Commissioner of "WashingtonJLCJ l movement, a cylinder surrounding the boring bar and concentric thereto, heads' for the opposite ends oi the cylinders, one of said heads being capable of rotative movement, each of said heads being provided with slots, shafts mounted in said slots, rollers carried by the shafts engageable with the bar, means for imparting movement to the heads being capable of rotative movement,

each of said heads being provided with slots, shafts mounted in said slots, rollers carried by the shafts engageable with the bar, means for imparting movement `to the' rotative head for inclining the axes of the rollers relative to the bar'vvhereby the longitudinal -movement of the bar may be controlled, and

means'for imposing tension on the shafts to urge the same toward the boring bar.

in testimony whereof I hereunto affix my signature in the presence of tWo Witnesses.

MCSE G. LAMB,

v Witnesses: y

J. M. KELLER, W; H. VATKINS.

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