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Publication numberUS897041 A
Publication typeGrant
Publication dateAug 25, 1908
Filing dateFeb 23, 1907
Publication numberUS 897041 A, US 897041A, US-A-897041, US897041 A, US897041A
InventorsByron M Weller
Original AssigneeByron M Weller
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined facing-tool and counterbore.
US 897041 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


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31 man foz @Wihyeaaeo cutter in elevation.



Application filed February 23, 1907. Serial No.

I '0 all whom it may; concern:

Be it known that l, Brno: M. WELLER,

citizen of the United States, residing at reference being had to the accompanying drawings which form a part hereof, and in which v Figure 1 is an elevation of the usual form of my device. Fig. 2 is an elevation of the same Without the reinforcing collar. Fig. 3 is an elevation of same with a long cutter and an enlarged reinforcing collar or sleeve. Figs. 4, 5 and 6 are end views. Fig. Tie a vertical section of the lower portion of the arbor and the pilot-bushing, showing the Fi 8 is a perspective view of the lower end oi the arbor.

The construction of my improved counterbore and facing tool is substantially as follows:

1 construct an arbor 1,, which is provided upon its upper end with asuitable shank 2, adapted to the Jul-pose of holding and driving the tool z T he lower end is preferably reduced in diameter at R,.foi the purpose of enabling the tool to operate upon areas smaller than the area of the arbor 1, through said reduccd portion R, is formed a slot 3,for the reception of cutters 4, 4" and 4"; said slot 3 extends upward a short distance beyond the shoulder R for the purpose of forming a more extended bearing upon the upper edge of the cutter.

Below reduction R, is formed a pilotpoint or hearing B, for the reception of the pilot bushing 5, which is revolubly mounted upon said poin t: Extending longitudinally through point B, and'in'to the cutter-slot 3 is a tapped hole 6, for'the reception of a set-screw 7, the

upper point of which bears against the lower.

edge of the cutter and secures the same in i'iSlElOIl.

Thepilot bushing 5of which there may be various sizes of, 5 is retained upon the point B by the washer 8 and nut 9, which nut screws upon the set-screw 7 and serves as a lock nut thereto; the diameter of bushing 5 Specification of Letters Patent.

l' atented. Aug. 25, 3.90%.

may vary, as aforesaid, to suit the size of the hole H, .(Fig. 1) which-the pilot is required to enter to fill.

Upon the arbor 1v is mounted a reinforcing sleeve 10 or 1'0, the lower edge of which is formed into s iral lips L, L, the long vertical faces of whicii bear respectively against the back side of each end oi the cutter to back it up or strengthen it against the cutting or working strain.

In this construction, by usinga pro erly proportioned sleeve, it becomes possibie to use long cutters in a comparatively snnillarbor, as shown in Fig. 3. Said sleeves are made non-revoluble upon arbor 1-, by seen? ing a feather 11 in the interior wall oi tl'ie sleeve, adapted to occupy the seat 12. The sleeves are adapted to have a certain amount of ldngitudinal adjustment upon'the arbor, and to secure said sleeve at the proper position of said longitudinal adjustun-nt, a set screw 13 passes through said sleeve, at the side opposite to feather 11, and bears against the arbor. When the cutter becomes narrow, from rinding, it becomes necessary to raise thes' e'eve, so that the lips L will not project below the cutting edge of the cutter; the object of the longitudinal adjustment of said sleeve 10 is thus obvious.

In order to efi'ectually prevent a chattering or vibration of the tool 4, it is necessary that that portion of the reinforcing sleeve 10 which bears against the back side of said tool, should extend down into close pros.

imity to the cutting edge of the tool: if, how i ever, said sleeve were made straight across the lower face, the accumulation of chips or borings beneath the same, especially in the form shown in Fig. 3, would materially interfore with the work of the tool, and it is for the urpose of overcoming this difficulty that the ower face of sleeve- 10 is made spiral, and

which constitutes an essential feature of my invention.

In tools of this type, the work to be done,

is of the character shown in Fig. 1, that is, the

material surrounding holes of a compare tively small diameter, is to counterbored or spot-faced at one or both endsof thollole,

and in order to have the counterborcor spotfacing concentric with said hole; there must be a pilot u on the end of the tool-to enter and fit said ole (Hlcloaely.

Intools, as at "esent constructed, the pilot is integral wit the arbor and revolves in the hole, and it is a common occurrence times breaks the pilot; this also interferes with the proper Working of the putters. With my construction, the dot-bushing does not revolve in the hole, snc therefore, is not subject to the conditions and objections above stated, hence, it is much essier'to o'perste, and all torsion, incident to driving the usual form of pilot, is eliminated, which is especially advantageous, when it is considered thatflsrieh torsion Inustlergely be sustained. by the reduces portion R of the arbor. ltis also obviousethet the reinforcing sleeve it) will relieve said reduced portion R'of all strain i'ncident to driving the cutter, hence will be readily understood that the reinforcing sleeve and the revoluble pilot -bushing cooperate toeliminete the torsion upon said reduction R, hence said reduction may be smaller than in the usual form of tool, and

the limit of working area of my tool becomes.

\ much greater, than in the usual 'form ofsenses? counterboi ee is a valuable "festiire of my invention,- for thereason that one arbor of my construction, will cover a range (if Work thet'it has heretofore required several erbors to accomplish.

Having thus described in l claim and desire to secure i;

invention, what y Letters Patent in s,- combin'ed counter-bore and facin tool, on arbor having a shank at one e115 thereof there being a. cutter-slot through said arbor approximate to the other end, a nutter in said slot, a reinforcing sleeve nonrevolubly mounted upon said arbor, there "beii'ig spirel lips upon said sleeve, each lip having. a vertical face adapted to bear swsinst the back sideof the respective ends 0i said cutter for the pu ose specified.

in testimony whereof in presence of two witnesses.

BYRON ,M. WELLER. Witnesses! g WM. F. WAGNER, FRANK CBIBSUF affix my signature v

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2811054 *Dec 12, 1955Oct 29, 1957Roy Townsend Leon LeCutter head for machine tools
US3276293 *Apr 27, 1965Oct 4, 1966Tesan Tool Mfg CompanyPilots for counterbore cutters
US3799688 *Mar 22, 1971Mar 26, 1974Lomax HApparatus for trimming plumbing pipes below floor level
US3870429 *Dec 3, 1973Mar 11, 1975Lomax Harold RApparatus for trimming plumbing pipes below floor level
US4091525 *Jun 16, 1976May 30, 1978Kombinat Maszyn Budowlanych "Bumar" Warszawskie Zaklady Maszyn Budowlanych IM.L. WarynskiegoReamer for fine reaming of ports
US4178115 *Mar 30, 1978Dec 11, 1979Lisle CorporationValve seat ring installation tool
US4895482 *Sep 2, 1988Jan 23, 1990Briles Rivet CorporationCountersink forming tooling
US4917550 *Feb 21, 1989Apr 17, 1990Briles Rivet CorporationCountersink forming tooling
US5078555 *Jun 4, 1990Jan 7, 1992Briles Rivet CorporationTooling to form a countersink or counterbore
US5827018 *Oct 30, 1996Oct 27, 1998Mcdonnell DouglasCountersink cutters having a free-spinning pilot
US6033161 *Aug 27, 1998Mar 7, 2000Scheufler, Jr.; Richard A.Revolving pilot tool
US6086293 *Sep 15, 1998Jul 11, 2000Harmand Family Limited PartnershipCutting tool for machining valve seats
US6382883Mar 9, 2000May 7, 2002Harmand Family Limited PartnershipMethod for lapping valve seats using a single point cutting tool
US6530727Apr 6, 2001Mar 11, 2003Harmand Family Limited PartnershipContour machining head
US6640410Jul 22, 2002Nov 4, 2003Harmand Family Limited PartnershipLine transfer system with a contour machining head
US7625160 *Mar 2, 2007Dec 1, 2009Milwaukee Electric Tool CorporationCutting tool
US8328477Nov 5, 2008Dec 11, 2012Milwaukee Electric Tool CorporationCutting tool
US8371777Feb 12, 2013Milwaukee Electric Tool CorporationCutting tool
US9221109 *Apr 11, 2013Dec 29, 2015Charles WiebeInstallation systems and methods for installing an object
US9339874Jan 25, 2013May 17, 2016Milwaukee Electric Tool CorporationCutting tool
US20070280798 *Mar 2, 2007Dec 6, 2007Zeiler Jeffrey MCutting tool
US20090087273 *Nov 5, 2008Apr 2, 2009Douglas AllenCutting tool
US20100322733 *Aug 27, 2010Dec 23, 2010Douglas AllenCutting tool
US20130287510 *Apr 11, 2013Oct 31, 2013Charles WiebeInstallation systems and methods for installing an object
US20140050545 *Oct 23, 2013Feb 20, 2014AircelleMultipurpose drilling tool and associated case
Cooperative ClassificationB23B51/107