US931883A - Reamer. - Google Patents

Description

J. MUTH, W. E. KELLYK; 0. P. HEINKEL.

REAMER.

APPLICATION FILED FEB. 20, 1908.

Patented Aug. 24, 1909.

JM/M

UNITED STATES PALIENT OFFICE.

JOHN IU'I'H, WILLIAM E. KELLY, CHRISTIAN-F. mm, 01' CZLEVIELAIITID, OHIO, ASSIGNORS TO THE nLLY TOOL COMPANY, OF CLEVELAND, OHIO, A'GOBPORATION OF OHIO.

REAMIB.

Specification of Letters iatcnt. Y Patented Aug. 24, 1909.

Application filed. February 20, 1908. Serial No. 416,909. I

To all whom it may concern:

Be it known that we, JOHN Morn, WIL- LIAM E. KELLY, and Cnms'rniri F. HEINKEL, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in .Reamers, of which the following is a specification.

Our invention relates to improvement in reamer, which can be used either as a solid or as a floating reamer, and in which a block carries a plurality of angularly placed and inde endently adjustable cutters;

e are aware, that reamers have been .made and patented which have a block and which will float, but could not be used as. either solid or floating reamer without extra parts and cost; we are further aware, that reamers-have been made and patented with angularly placed, but not independently adjustable cutters; we are further aware, that reamers have been made and patented with independently adjustable, but not angularly placed cutters; these reamers can not be made of small diameter, nor do they allow of large scope of adjustment, or of nicety of adjustment. A

' The object of our improvement 1s: first, a

chea and simple reamer; second, a reamer whic has greater scope of ad'ustment and more accuracy of adjustment t an the reamers now in use; third, a reamer which may be used either as a solid or as a floating reamer; fourth, a reamer in which the cutters may be made small, and may be easily and independently sharpened or replaced; and fifth, a rcamer which can be made of small diameter. We attain these objects b mounting the cutters on opposite sides an at an angle with a block; by placing the cutters on opposite sides of a block we are able to make a reamer of small diameter, because the cutter on one side of block will not interfere with cutter on other side of same block; by placing the cutters at an angle we attain nicer ad ustment, the adjusting screws act directly a ainst cutting face of reamer, and, as is wel known in theart, a reamer, in order to slze holes accuratel must have its cutters securely fasobtaining a longer bearing face, an

when high priced steel is used for cutters;

we"attain the object of using our reamer either as a solid or as a floating reamer by the use of one stem, thussaving stems, since one stem may be used for any numberof reamers, and any or all of these reamers may be used as either solid or floating by manipulating one screw. y

Reference is to be had to the drawings, in which: Figure I is a general plan-view of reamer proper, without stem, showing arrangement of parts. Fig. II is a section on line a::c, showing cutters and adjusting screws. Fig. III is a. general end-view, showing relative location of cutters in block. Fig. IV is a section on line y y, showing one method of clam ing cutters in block. Fig. V shows screw or securing the block rigidly and centrally to the stem; for use as a SOlId reamer. Fig. VI is a section of locking-device for small reamers, where one looking-screw only can be used. Fig. VII is a general View of complete reamer, partly broken away, to show method of holding the 'block whe the reamer is used as a floating Similar numerals refer to similar parts throughout the several views.

, The block 1, shown in Fig. I, is made rectangular or square; is provided with grooves 2, for the purpose of receiving cutters 3; is also provided with openings 4, for the purpose of allowing the tool to run off when planing or milling said grooves 2 and to facilitate tapdping for adjusting-screws 5; is also provide with openings 6, for the purpose of receiving clamping-bushing 7 and clampingscrew 8; is also provided with counterbore 9,

for the purpose of receivin end of holdingscrew 10; and is also provi ed with countersink 11, for the purpose of receiving point of locking-screw 12. The said cutters 3 are placed on opposite sides of said block 1, and at an angle with center-line of said block 1, and said cutters 3 are, preferably, beveled on each side, and said ooves 2 are'made to fit, as shown in Figs. I and VI; said cutters 3 center-line of said block 1 for the larger sizes of reamers, for a smaller size one opening on center-line of said block 1 will answer, and for the very small sizes two openings are needed, and they will be located, respectively, on opposite sides of center-line of said block 1 than the openings shownin Fig. I this is not shown in the drawing but may be understood easily. 'Said adjusting-screws 5 are for the purpose 0 adjusting said cutters 3 independently. The preferred clampingdevice consists of said clamping-bushing 7 and said clamping-screw 8; said clampingbushing -7 is made cylindrical, has one-beveled spot 13 to fit side of said cutter 3,-and is threaded to receive said clamping-screw 8; this clamping device, shown in Fig. IV, is for the larger sizes of reamers, for the smaller sizes. of reamers the said cutters 3 come closer together and one clamping device only is possible to clamp said cutters 3; this clamping device is shown in Fig. VI and consists of two clamping-bushings 7 and 7. f and one clamping-screw 8; said clamping-bushing 7 is made the same way. as clampingbushing 7 previously described but said clampingbushing 7 is not threaded, but is drilled and countersunk to fit head of clamping-screw 8.; for the smallest .sizes of reamers, said cutters 3 overlap each other, there will not be room for the clamping device shown in Figs. IV and VI, and we then use clamping method shown in Fig. VIII, which consists 'of one or two clamping- screws 14 and 14 for each cutter; one clamping-screw 14 only may be used, but two hold better; this clampingmethod may-be used on all sizes of reamers, but we prefer to use the clamping device previously described, wherever possible. Said 'counterbore 9 is made larger in diameter than the end of said holdingcrew 10, so that said block 1 may have la eral movement, or what is commonly called floating; said holding-screw'10 is screwed up to bottom of said counterbore 9 so, that said block 1 may slide easily, butmay notbind, and to prevent said block 1 from'tipping, or said cutters 3 from dig 1guiln; check-nut 15 is for the purpose of 00 g said holdingi screw 10.when properly adjusted; this arallows said block 1 to tion of saidope rang 'ment constitutes a floating reamer. Sai locking-screw 12. screws into end of stem 16, is pointed to fit said countersink 11 and is for the purpose of'locking said block 1 centrally and firmly; this arrangement constitutes a solid reamer. Said stem 16- is made to fit any desired machine at one end; the other end is provided with a slot, which ass through easily, and is also provided wit a threaded hole to receive said holding-screw 10 o'rsaid lockingscrew' 12. up against a shoulder, we construct one end 0 said stem 16 as shown inFig. X; said slot, which receives said block1,'is placed close to' In case the reamer is to be used the end of said stem 16, or said slot may be open on end of said stem 16 and a cap may or a may not be placed over said slot said stem 16 is provided with 'a suitable opening, near its end to receive pin 17; the opening in said block 1, in this case, is taper, and it will be seen that, when said screw 17 is screwed in tight, said block 1 with said cutters 3 will be held centrally and firmly, as in a solid reamer, but when said screw 17 is screwed back, or loosened, any desired amount of float, within the limit of saidscrew- 17, may be, obtained; the methods of adjustingeand clamping 'of said cutters 3 in this case 1s the same as previously described. Having thus described our invention, we claim:

1. A reamer comprising a block; independently adjustable cutters fitting into angularly placed grooves on opposite sidesof said block; a clamping device for said outters; and adjusting-screws for, and placed in line with, said cutters.

g 2. In a reamer the combination of a block with its cutters, -a stem, and means for either floating-lyor rigidly and centrally securing said block to said stem; said means consisting of a pin, an opening in said block, and an opening in said stem, said pin having a taper portion engaging in said opening in said lock, astraight portion engaging in a porin" said stem, and a straight and threadediportion engaging in the other portion of said ;ope'ning in said stem.

' JOHN -MUTH-.-i'

- WM. E. KELLY. v I CHRISTIAN F. HEINKEL. Witnesses:

ALBERT SOULECK, FRANK S. SMITH.

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