Pipe-Bending Machine. Page: 2 of 3
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UNITED STATES PATENT OFFICE
CALEB C. RUTLEDGE, OF A LVORD, TEX AS.
PIPE-BENDlNG MACHINE.1,079,442.
Specification of Letters Patent. Patented Nov. 25, 1913.
Application fled January 17, 1913. Serial No. 742,531.To a zcdiowm it rnay concern.
Be it known that I, CALEn'C. RUmILEGE,
at eitizen of the United States, residing at'
Alvord, in the county of Wise and State of,
.5 Texas, have invented certain new and use--
ful InIprovements in Pipe-Bending Ma-
chines, of which the following is a specifi-
cation.
This inventioil relates to new and useful
10 improvements in pipe bending machines.
The objects of the invention are; the pro-
vision of a base shaped to receive a recipro-
catory rack bar having a pipe engaging'
' member at its forward end, said base also
15 pivotally and' adjustably supporting pipe
fulcrum members disposed laterally of the.
rack bar and having particularly constructed
pipe engaging devices in which the pipe is
fulcrurned during the bending or shaping-
20 operation; the provision of an operating'
lever carried by the base and provided with
a dog engaging the teeth of the rack bar,.
togeth er with a pawl mounted on the base
and engaging the teeth of the rack bar;
25 and the provision of readily removable fas-
tenings and -Pivot supports whereby the
machine may be expeditiously taken apart
in conveniently transported elements and
readily and easily assembled without loss of
30 time.
A still further object. of the invention is
to provide a device of the character d(1e
scribeld that will be strong, drlaile, clii-
dent and simple and comparatively iiicx-
s pensive to constfict',.also one in which the
several parts will not be likely to get (Jut of
working order.
With these and various other obje< ts in
view the in) vent ion has relation to certain
40 novel features of construction i,;id lopera-
on, a evaiiple of wi hich is describedd in the
fio llotin ,lfcifiatiion ilnd illiistrated in the
(;(oompain 1g (aIlrags, wheren:
Figu;r. 1 is a plat view of the in-chine,
4 tait) in 'ietitnigo in dotted lines, posit ions to
whi ich he l rtm m1flibrsC imay be sw mig.
Fig. 2 is a side elevation of the same, and
Iig. v isn t reI eleation of their mine.
III thme draw1igs ;he nmral 1deies
I a rasvti-e bi-e (if heavy Coinstrii(t in ba ~
in s ntral riectanlgtlai opening '2 ad at.
(ch side inwardly extending bearing re-
iess'1S 3. An (clngate(l rack haI 4 pisss
It-em igrh the opening 2 a mid is provided with
S5 upon its 111)1)1' side.
' io wvt '' o. 'il 1tf thme m1 px.- r is ial m-e Iin thickness and provided with a seg mental
jaw 6 to which is Binged a segmental keeper
7. The keeper has a plurality of ipeiraures
S arranged to register with an aperture 9 80
in the outer end of the jaw. Any of lie
apertures 8 may be brought into - register
with the aperture 9 and a pin 10 passed
therethromugh thus fastening tie jaw and
keeper together. Pipes of various dian- 85
eters niay thus be held.
In each recess 3 a fulcrum nimember 11 is
pivoted. Each fulcrum mneimber comprises
a bar pivoted in the recess on a vertical
headed pin 14 inserted in the base 1 and 70
passing through one of a series of apertures
15 in the bar-the latter serving to adjust
the bar longitudinally. The forward end
of each bar is bifurcated and receives the
ear 16 of a segmental jaw 17, said ear be- 75
ing pivoted on a headed pin 18' passing ver-
tically through the finr'at ions of the bar.
Each jaw may be swung laterally. To each
jaw a segmental keeper 18 is pivoted similar
to the keeper 7 and likewise apertures 19. o
and 20 and a pin 21 are provided, whereby
said keeper 18 may be adjustably fastened
to its corresponding jaw. It will be noted
that each jiw 17 and its keeper 18 ave bev-
eled as shown in Figs. 1 and 2, whih Iey- 85
eled portions extend relatively iawy 'from
the jaw 6 of the rak itA whitli is disposed.
center .y of the fulr mi nenibers r. These
hte ied or inclined faces serve to better g-rip .
.e pipe and conform to the contour thereof.9Q
as the same is shaped.
It will le noted that the fulerumm nmbe s
owing to their hinged joints and supports,
may be saving into various positions rela-
tive to the rack bar as indicated in Fig. 1, 95
thereby perniittiingi varios shapes to be
formed. Also by adjusting one fulcrun
member in advance of the other the pipe
umay be irregilarly bent or a compound
(cu1rve produced.. 100
It is to be understood that in operating
the inichline the pipe in some instances must
'ie faitenedi against longitudinal displace-
ment hby any suitable meaims (not shown)
and it may also be necessary to fix thie ma- 105
chinic in place by 'a)y suitable means (not
shown). When the fulcrumi members are
in the position showr in plotted lines in Fig.
I and the rack bar is moved outward, said -
members xillt tend to straighten but their 110
jaws will bind on the pipe and the relative
itosimi ons witi rer'zard to the jaw 6 will no
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Rutledge, Caleb C. Pipe-Bending Machine., patent, November 25, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858501/m1/2/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.