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ADJUSTABLE MULTIPLE CUTTER BORING BAR.
' No. 408.154.
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. Patented May 14, 1889.
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3 Sheets—Sheet 2.
J. STONE.
ADJUSTABLE MULTIPLE GUTTER BORING BAR.
Patented May 14, 1889.
No. 403,154.
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' ADJUSTABLE MULTIPLE CUTTER BORING BAR.
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Patented May 14, 1889.
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V UNITED STATES
PATENT OFFICE.
JABEZ STONE, OF WVATERFORD, NElV YORK.
ADJUSTABLE MULTIPLE-CUTTER BORING-BAR.
SPECIFICATION forming part of Letters Patent No. 403,l54,iclated May 14, 1889.
Application ?led August 4, 1888. Serial No. 281,924. (No model.)
head is provided with a central longitudinal
bore, A3, adapted to receive a traveling tool
dent of Waterford, in the county of Saratoga carriage, B. The circular head is also provided
and State of New York, have invented cer with the radial slots A4 and A5, extending 55
tain new and useful Improvements in Adj ust from said central bore outward, adapted to
able Multiple-Cutter Boring-Bars; and I do receive and form a slideway for radial lugs
hereby declare that the following is a full, projecting from the traveling tool-carriage,
clear, and exact description of the invention, the lug A“, adapted to slide in the slot A“, be—
_ To all whom it may concern:
Be it known that I, JABEZ STONE, a resi
IO
that will enable others skilled in the art to ing provided with the tool-socket AT, adapted
which it appertains to make and use the same, to receive the tool 0, and the lug A8 being
reference being had to the accompanying provided with a threaded aperture intersect
drawings, and to the letters of reference. ing the tool-socket, adapted to receive the
marked thereon, which form a part of this tool-binding screw 0’, which screw serves to
hold the tool in place in its socket. The rect
specification.
'
Similar letters refer to similar parts in the angular shank A is also provided with a
15
central longitudinal bore, A", extending from
several ?gures therein.
My invention relates to improvements in the bore in the circular head through the op
adjustable multiple-cutter boring-bars; and posite end of the shank.
The traveling tool-carriage l)’ is provided
bination of parts hereinafter described, and with a threaded central aperture adapted to
receive a similar threaded stem, D, when in
pointed out in the claims.
65
it consists of the novel construction and com
serted in the longitudinal bore A". The stem
is of sufficient length to engage at its threaded
case, the bar being shown in position for si end with the carriage, While the other end of 75
multaneously working in opposite directions the stem projects from the other end of ‘the
upon two faces of the case. Fig. 2 is a plan shank. The projecting end of the stem is
view of the boring-barl detached when viewed provided with means for imparting to it aro
from the bottom, as shown in Fig. 1. Fig. 8 tary movement, as rectangular stud D’,
is a vertical cross-section of the parts shown adapted to receive the socket-wrench D3.
in Fig. 2, taken centrally of the binding This end of the stem is also provided with a
screw 0’, and upon a considerably enlarged collar, D2, ?xed thereon.
The corresponding end of the shank A is
scale. Fig. 4 is a similar section taken on
the broken line y 1y in Fig. 2. Fig. 5 is a provided with an enlarged bore, forming the
similar section taken on the broken line a a’ shoulder A10, which shoulder forms a seat for 85
in Fig. 2. Fig. 6 is a front elevation-of one the collar D2. The enlarged bore is also
of the valve-faces shown in Fig. 1, with the threaded and adapted to receive a corre
other portions of the valve-case broken away. spondingly and eXteriorly threaded nut, F.
The nut is centrally perforated to receive
Fig. 7 is a central longitudinal section of the
boring-bar, taken on the broken line a a, Fig. the end of the stem, and is also provided with
2. Figs. 1 and 6 are drawn upon the same ?ange F2, adapted to engage with the end of
scale, and all the remaining ?gures upon an the shank A, and so arranged that when the
nut is screwed into the end of the shank un
enlarged and uniform scale...
My improved boring-bar is adapted for use til the ?ange F2 engages therewith the inner
in a lathe or upright boring~mill or other simi end of the nut will just come in contact with 95
lar machine. It is preferably made with a the collar D2 on one side without binding
square or rectangular shank, A, provided tightly thereon when the other side of the
with a circular head, A’. The rectangular collar is in engagement with the shoulder A10,
shank is adapted to ?t and be fixed in the as shown in Fig. 7. The threaded binding
tool-post of a lathe, mill, or other machine, screw G, provided with an operating-handle,
or in a special block or saddle, A2, attached G’, is made to ?t a correspondingly-threaded
to the carriage of the machine. The circular radial aperture 111 the shank at a point op
Figure 1 of the drawings is a side elevation
of my improved bar and a section of a valve
25
35
40
45
50
2
403,154
posite the collar, whereby the stem and the employed, and the distance apart of the sla—
collar may be prevented from rotating when tionary tool-slots maybe so proportitmed to
the screw G is turned to bind thereon. The
circular head may also be provided with any
quired spacing of the tools-for example,
desired number of tool-sockets. I have shown
when working upon the faces J J’ it is evi
two sockets, H and TI’, adapted to receive
dent the tooll'l,3 could be removed as super
?uous, and if the faces were so near together
the tools If2 and II“, which tools are secured
in their respective sockets by the binding
screws H“.
the travel of the carriage as to afford any re
that the tool 112 and the tool 0 could not be 50
inserted between them by reason of the
The object of the invention is, in facing, limited travel of the tool»carriage, then the
chasing, or performing other similar work tool ll.2 could be removed from the socket ll’
upon metals, to work two or more cutting and inserted in the socket ll. (Shown in Fig.
tools mounted upon a common boring-bar in 1 as occupied by tool I13.)
55
opposite directions upon different parallel
I am thus able to double the capacity of
15 faces—as, for example, tools C and II2 upon the boring-bar in performing the kinds of
the two opposite and parallel faces JJ’ in the work described without materially adding to
interior of the valve-case shown in section the expense of operating it.
in Fig. 1, being shown located to cut on the
\iVhat I claim as new, and desire to secure 60
dotted line in Fig. (l.
by Letters Patent, is-—
IO
The operation of the device is as follows:
The bar is ?rst adjusted in the saddle A? in
1. In a multiple-cutter boring-bar, a sta
tionary ?xed bar provided with a tool-socket,
the usual manner, so that the tool. II2 will
in combination with a tool-carriage for car~
work against the face J’.
rying a separate tool, n'iovably supported by
The tool 0, se
cured in the traveling carriage B, is then ad
such ?xed bar and adjustable longitudinally
25 justed to work against the opposite and par thereon, for the purpose of simultaneously
allel face .l' by means of the wrench l)", the cutting two interior faces, substantially as
latter bein released by unscrewin the hind described.
ing-screw G. By turning the stem 1) to the
2. The combination, in a multiple-eutter
right the carriage is drawn toward the col boring-bar, of a shank, A, head A’, provided
lar D2, the latter bearing upon the shoulder with tool-sockets ll, tool-carriage ]},1novably
Al", and by turning the stem to the left the mounted upon the head, carriage-adjusting
carriage is forced to travel from the collar, stem 1'), and means for locking the adjusting
the latter bcarin upon the inner end of nut stem, as binding-screw G, substantially as de
It‘, as before expained. It will thus be seen scribed, and forthe purpose of simultaneously 75
3 Ln. that the cutter is adjustable longitudinally working two cutting-tools upon the opposite
of the bar and independently of the adjust faces of a straight-way valve.
ment of the latter or of the cutters stationary
In testimony whereol'I have hereunto set my
thereon. The cutter O is securely locked in hand this 1st day of August, 1838.
its adjusted position by means of the hind
JABEZ C'l‘ONlC.
ing-screw G, operated to bear against collar
D2, as before explained.
Different sizes ol’ the boring‘hafr may be
W itn esscs:
(Elmo. A. ll‘lOSI-IER,
W. ll. ll(')LLIS’l"lGR, Jr.