US1324553A - Machine-reamer - Google Patents

Description

H. JUNG.

MACHINEREAMER. APPLICATION man lunezo, |919.

/' l jg?. 1.

Il Il' HENRY JUNG, or NonWooD, OHIO.

Application led June 20, 1919.v Serial No. 305,600.

To all 'whom t may concern:

Be itlmown that I, HENRY JUNG, .an alien German, and a resident of Norwood, in the county of Hamilton and StateA of Ohio, have invented 'a certain new and useful Improvement in Machine-Beamers, of which the following is a specification.

This invention relates to machlne-reamers,

or more especially-to those of the expansion,

radially-adjustablecutter-blade type and toinclude hand-'reamers as well; and the object and consistency thereof are to provide a circumferential series of cutter-blades that are set free to be moved or slid both lengthwise and radiallyin open, longitudinal slots or `narrowseat-ways made in the outer end ofthe reamer-head, such cutter-blades having inclined or sloped inner longitudinal edges, and to further provide 'a conical spreader that is free to be .reciprocated or slid along the outer tip-end of the reamerspindle andv whose face coincides indegree with thatof the inner sloping longitudinal edges kof the cutter-blades, a pilot-ring or carrier-sleeve for use in adjusting the said spreader along the said outer tip-end of the spindle and having a deep peripheral iange or rim, a ring or washer detachablysecured to the open-slotted end of the reamer-head and having VVset-,screws whose inner ends are adapted to .engage the outer ends of the cutter-blades forholding the latter in adjusted longitudinal position in'their respectivek slots or narrow seat-ways and the said Y deep flange or rim on the pilot-sleeve oon- Y tacting with the outer face of the said Washer to cover the screw-heads and thereby f preventthe accidental retreat or withdrawal of the screws themselves, and a lock-nut on the eXtreme outer, screw-threaded ltip-end of the spindle for preventing the conical spreader and its carrier-sleeve retreating' `from set position onthe said spindle when the reamer is in an operative stateready for and during actual use. f l

AThe details of structure will be fully hereinafter described and then more particularly pointed out inthe yclaims that follow.

In the accompanying sheet of drawings,- Figure 1 is a longitudinal elevation of my vimproved reamer, the same being shown,

las

however, in horizontal position and with est .expanded position in the.head;

Fig. V2, an axial,y longitudinal-[section of :its cutter-blades in their innermost or slight- MACHINE-REAMER.

` Speccation of Letters Patent. i

, dotted- line 3, 3, of

Patented Dec; 9, L1919.

Velevation Fig. 3, a transverse sectiontaken.on .the

Fig. 1;

Y F ig. 4, 'a transverse section-taken-on the dotted-line 4, V4', of Fig. l;v f

Fig. 5, a fore-end elevation ofthe device; Fig. 6, a side elevation of thev conical l.cutter-bladespreader or expander forming one of thelmam features'of the invention herein; and- Fig. 7,; a .perspective view ofone ofthe .Cutter-blades shown in .itspreferred form.

In these views, 8 indicates the usual mounting-end of the spindle, having the reducedv fore-portion 9 vand the still further reduced fore-endor eXtreme tip 10, the latterl being screw-threadedpart length, 'as

best seen in Fig. 2. l

llrindicates a tubular head or sleeve keyedv to the portion 9 of the spindle and extending forwardly over the reduced' tip-end 10 of said spindle so as to leave an annulus 11a for accommodating a 'conical spreader 12 `whose circular rear-extension 13 is outwardly screw-threaded andit has asmooth bore for-enabling it to pass freely along the said tip-end 1 0 'of the spindle, as best seen in Fig.V 2,

That part of the Vtubular head or sleeve 11 extendingl over the tip-end 10 of the spindle -is provided with a circumferential series of equdistant longitudinal slots or narrow seatways 14 to accommodate cutterblades 15 whose outer edges extend normally a slightdistance beyond the outer `faceor periphery of the said tubularhead-or sleeve 11 and whose inner edgesl are sloped, asV ,shown at 16, to correspond to the slope of the conical spreader 12, the slope of both being preferably, but not essentially, ten degrees, which is sufficient to facilitate the outwardexpansive movement of the cutterblades beyond the face or pe'ripheryof the head 11. .Y

A ring or washer I17 is fastened by "means ,ofscrews 18 `to the outer 'end of the openslotted-head 11 and additional set-screws 19 are used in said ring for independently vholding the cutter-blades 15 1n their seat ways 14 against longitudinal movement, as wellas outward radial movement, the cutterblades being by preference a little shorter than the length ofthe seat-ways when it is the .intention that the said-ring-shall not ifb'ear Y directly in contact with the cutter-bladesin the use of the tool and it being further 1ntended to use the width or thickness of the ring, as well as the slight space 15a between the outer ends of the cutter-blades and the ring to afford an advance aligning-bearing for the tool in the hole to be reamed out and forming an important feature of my invention herein. The set-screws 19 have no heads, but the fastening-screws 18 have inwardly-beveled heads that engage countersunk openings made in the outer face of the ring or washer 17 so that they may seat flush with the said outer face of the washer. Ordinarily, three of the fastening-screws 18 are sufficient, and, of course, a set-screw 19 vfor each cutter-blade, as best shown (dotted) in Fig. 5. As thus far specifically described, the cutter-blades are best approached for inserting and adjusting in their seat-ways by simply loosening the setvscrews 19 and manipulating the conical spreader 12 backward or forward to suit the dista-nce the said cutter-blades shall project beyond the face of the head 11, the said slight space 15a provided by making the blades shorter than their seat-ways being utilized for the insertion of a pointed instrument and the ready movementof the blades to suit the position they are to occupy in the head effected.V

Thus the ring or washer 17 need not be removed from place on the end of the head,

' unless it be otherwise desired to remove the blades lengthwise from their seat-ways and replaced by others or for repairs.

To enable a ready adjustment of the blades, especially outwardly in their seatways, l provide a pilot-ring 20 that is internally screw-threaded for engagement with the outwardly-threaded extension 13 of the conical spreader 12, a multiple flatfaeed formation, heXagon nut-fashion, 21 being constructed on the outer portion of thepilot-ring forthe use of a wrench in applying the pilot-ring to and fro along the said threaded rear-end 13 of the spreader. The pilot-ring is further provided with a flange 22 of sufcient diameter to cover the face of the ring or washer 17 and thus effectually prevent the escape of the screws from the said washer 17 when the parts of the device are assembled and in use.

An outer lock-nut 23 is mounted on the threaded end of the spindle tip 10 to close and hold the pilot-ring 20 in place on the threaded extension 13 of the conical spreader 12, and, in turn, said conical spreader in expanded position in contact with the sloped inner faces of the blades, and, also, to hold the flanged inner face of the said pilot-ring 2O in contact with the outer face of the washer 17 for the purpose above described in connection with preventing the release ofthe screws from place in said washer..

An elongated pin 211 extends from the face of the conical spreader 12 for engagement in the annulus 11a of the head or sleeve 11 between the inner sloped edges of any adjacent pairs of blades 15, as best shown in Fig. L1, but well shown, otherwise, in Figs. 2, 3 and 6, for the purpose of preventing the rotation of the conical 'spreader when it is desired to rotate the pilot-ring 2O for advancing or retreating it along the threaded rear-extension 13 of said spreader, and especially when it is desired to use the spreader in expanding or outwardly-protruding the cutter-blades for reaming out bores of larger diameters. V

It is obvious, withoutv going into any lengthy detailed description, that the structure herein is well adapted for use as a handreanier, or as an eXpansible-tap for varied uses, the cutter-blades being adaptedto be made quite long for the hand-reamer, or

longer than for the machine or power-driven reamer.

I claim 1. A reamer comprising a spindle, a head or sleeve keyed thereto, a partially threaded shoulder tip at the outer end of said spindle, open slots or seat-ways in said head ory sleeve, cutter-blades having sloped inner edges and freely engaging the said open slots or seat-ways, a ring or washer mounted on the outer open-slotted end of the said head, fastening-screws in said washer, setscrews in said washer for holding the cutter-blades in adjusted position to suit the diameter of hole to be reamed, an annulus between the said tip of the spindle and the open-slotted end of the said head, a conical spreader-provided in said annulus and having a smooth bore for free reciprocal-engagement over said spindle-tip and in contact with the inner sloped edges of the said cutter-blades, a threaded rear-extension on said conical spreader, a pilot-ring having threaded-engagement with the said threaded rear-extension on the conical blade-spreader, and means on the outer end of the spindletip for engagement with the said pilot-ring for holding itin adjusted position in connection with the expanded or protruded cutter-blades to suit the desired bore of the hole to be reamed.

2. A reamerA comprising a shouldered n spindle having a reduced outer end or tip that is partially screw-threaded, a cylindrical head or sleeve keyed to the spindle to the rear of said tip, openslots or seat-ways in the outer end of said head beginning in line with the inner end of said spindle-tip and extending part way only the length of said tip, an annulus between the said spindle-tip and the open-slotted end of said head, cutter-blades mounted free to be moved in said open slots or seat-ways andV having sloped inner edges, a ring or washer' 130 deachably-mounted on the outer openslotted end of the head, set-screvvs in said ring or Washer for holding the cutter-blades in adjusted position in the open-slotted end of the head, a conical spreader in said annulus and having a smooth bore for free reciprocal-engagement over said spindle-tip and in expanding or outwardly-spreading contact with the inner sloped edges of the cutterblades, a threaded rear-extension on said conical spreader, a pilot-ring having threaded-engagement With the said threaded rearextension on the conical blade-spreader, a flange along the periphery of said pilot-ring to contact with the outer face of the said Washer and to prevent the outward escape or retreat of the screws in said Washer, a locknut on the outer end of the spindle-tip for engagement With the outer face of said pilot-ring and to hold the cutter-blades in adjusted position, and a stop-pin on the conical spreader for lateral engagement With the sides of the inner edges of any adjacent pairs of cutter-blades to prevent the turning of the conical spreader on the spindletip when the pilot-ring is turned along the threaded rear-extension of the said conical spreader in the adjustment of the said cutter-blades.

HENRY JUNG.

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