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Патент USA US2255009

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Sept‘ 2, 1941- Y
c. H. INGWER
2,255,009
RATCHET DIESTOCK
Filed Oct. 20. 1959
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INVENTOR.
age; H. INGWEQ
BY
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ATTORNEYS, '
Patented Sept. 2, 1941
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2,255,009?
UNITED STATES PATENT OFFICE
‘RATCHET DIES‘TOCK
'CarlgHfIngwer, Elyria, Ohio, assignor'to The
Ridge Tool Company, North Ridgeville, Ohio, at
' corporation of Ohio‘
Application October 20, 1939, Serial No. 300,445
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(01. 104124)‘
Claims.
This invention relates to an improved ratchet
wrench construction, and more particularly to
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ratchet handle disposed thereon, certain of the
parts being broken away to illustrate the in
ratchets for use in connection with threading
terior construction;
dies or» socket wrenches wherein the socket and
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the socket wrench in combination provide the
Fig. 2 is a section taken along the lines 2-2 of
Fig. 1 through the ratchet mechanism with the
ratchet
In themechanism.
use of threading
~ ~ ‘ ' dies3 it is often de
die head shown in side elevation;
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Fig. 3 is a side elevational view of a die head
sirable to have a ratchet handle for operating the
removedfrom the ratchet.
threading‘die. Usually ‘these threading dies in
In the drawing like parts are shown by like
clude' a die head which carries thread cutting 10 reference characters. As previously stated, the
chasers and which head is provided with a co- '
die'comp-rises'a head I which carries'the thread
axial sleeve extensionv or--bar-rel to which- the
cutting chasers in the usual manner. The size
‘wrench is applied for rotating the head. The
of, the headmay vary depending upon the size of
barrel» is'provided with a bore co-axial with the
the pipe for which the die is designed, that shown
head, the diameter of which is but slightly larger 15 being for threadinga 1"~ pipe.’ Extending from
than the outside diameter of the pipe to be I the head co-aXially therewith is a sleeve or bar
threaded and which bore‘serves as a guide for the
rel, 3 whichis provided with a 'bore 4 axially
pipe assuring proper engagementof the chasers
aligned. with the head. The sleeve bore is of a
with’ the work and that the threads will thus be
diameter sufficiently large to receive there
squarely started and cut. Inasmuch as » the 20 through' and guide a 1" pipe. The dies are
guiding barrel is placed on the threaded pipe ?rst,
the ratchet handle having previously-been-placed
usually provided insets and obviously for small
over the outside of the barrel, the pressure ex
erted~to start the thread cutting tends to dis
lodge the handle from connection with the die 25
barrel. The present invention‘ has particular
er dies the bore would be correspondingly smaller,
but the barrel itself remains the same outside size
throughout the set.
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"The surface of the barrel is provided with a
plurality of'longitudinally extending grooves 5
reference to an-improved mechanism for pre
which extend from the end of the sleeve to‘ a
venting the accidental displacement of the
point spaced from the head. The grooves may
decrease in depth from the end toward the head,
being’ shallower in the end toward the head, as
'-wrench
Althoughlocking
from the die mechanisms
barrel‘or sleeve.
for preventing
such displacement of the die and wrench are
relatively well known there have been many
best shownin Fig. 2. These grooves are disposed
at regularly spaced’ intervals about the periphery
disadvantages in the prior mechanisms which it
of ‘the barrel, as vbest shown in Figs. 1 and 3.
The surface of the sleeve is relieved in a zone 6
For instance, previous devices have relied on 35 spaced from ‘the end of the sleeve and the head, to
spring lock rings which were not only hard to
provide a shallow channel extending circum
is the purpose of this invention to overcome.
operate, but readily became clogged with dirt
ferentially around the sleeve and acrossv lands
and‘ inoperative. Still further disadvantages re
side in the increase cost of manufacture, as well
as the large breakage of parts.
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or ridges intermediate the grooves. In the"cen-'
40
By the present invention I‘have provided a
locking mechanism which is easy and simple to
operate, not liable to breakage and which is
economical to construct.
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tends circumferentially around the barrel-and in
which is disposed a spring ring 8, which-maybe
a split steel wire ring, but does not necessarily
have to be resilient.
There are also a mini
mum number of parts to get out of order. >
ter of the channel 6 is a groove 1 whichalso ex
45
Still other advantages of the invention and
the invention itself will become‘more apparent
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The handle for cooperation with the ‘die-sleeve ,
andwhich has a. reversible ratchet connection
therewith, comprises a body 10, Figs. 1 andJ2,
formed with a central circular opening ill off'a '
from the following description of an embodiment
thereof wherein I have described-and illustrated
diameter to provide a close sliding ?t withthe
Obviously the invention has other uses than ‘for a
threading die and the invention is in no sense
limited to such use.' The descriptionis illus
handle I 3 which is screw threaded therein’.
sleeve 3. A socket I2 is provided extending from .
the same in connection-with a threading die. 50 the side of the body adapted to receive a tubular
trated by the accompanying drawing;' wherein:
i, Fig, l isan end view ofa die head showing‘ the 55
A boss It extends from thebody and is formed
with abore !5 opening into the opening ll ofthe
body and in which is disposed a ratchet, pawl
which has a pawl face It adapted for engagement
2,255,009
2f "
threading die body adapted to be rotated, a co
in the slots 5. A stem I1 is provided for the pawl,
which stem extends beyond the con?nes of the
axial sleeve for said body for rotating the same,
a plurality of grooves in said sleeve extending
from the end of the sleeve to a point spaced from
the body, means to be telescoped on the sleeve
boss I4 and is provided with a knurled head l8
which is secured to the end of the stem by a cross
pin IS. The wall of the bore I5 extends inwardly
at 29 to provide a close sliding ?t with the stem
H to guide the pawl stem and to also act as an
abutment, for a helical pawl spring 2|. The
comprising an annular member having an open
ing, a pawl carried by said member and engage
able in said grooves, and means carried by said
sleeve for engagement with said pawl to lock
said sleeve and said annular member together.
2. A device of the class described including a
body adapted to be rotated, a coaxial stem for
said body for rotating the same, a plurality of
grooves in said stem extending from the end of
the stem to a point spaced from the body, ratchet
means to be telescoped on the stem comprising
an annular member having an opening, a pawl
spring 2| is compressively engaged between the
pawl body and walls 26 urging the pawl inwardly
so that the face It is in engagement with the
grooves 5 of the sleeve. A pair of slots 23 are
provided in the wall of the‘ boss l4 extending
transversely through the boss and from-the end
inwardly. The slots are sufficiently large to
readily receive the cross pin 19 and hold the
same against rotation. The face it of the pawl
carried by said member and engageable in said
is such that on one side it provides a positive
engagement with the sides of the grooves 5 to
grooves and having a slot in the end, and means
carried by said stem for engagement with said
pawl- to lock said stem and said annular member
together, comprising a ring disposed about said
stem and engageable in the slot in said pawl.
rotate the sleeve when moved in a counter-clock
wise direction, while the other side strikes the
edges of the lands between the grooves, which
contact exerts a cam action of the pawl face
3. In a ratchet threading die, of the class de
scribed comprising a die head, a stem extending
from said die head, and provided with a plurality
It with the edge of the land causing the pawl to
rise out of the grooves when the handle is turned
in a'clcckwise direction, as seen in Fig. 1. The
knob l8 may be pulled out and the position of
of radially disposed longitudinally extending
grooves, and a shallow annular channel formed
the pawl reversed for rotating the die in the
other direction.
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in said stem intermediate the die head and the
30 end of the stem, a groove formed in the mid
_ The pawl is provided with a notch 24 extend
ing transversely across the pawl and adapted
to allow the pawl to ride down around the ring 8.
In operation, the pawl is pulled outward by
thehead l8 until the cross pin 19 is out of the
slots 23 and the wrench body slipped over the
grooved sleeve on the die.
The pawl is then
released, after which it drops into the position
shown in Fig. 2 where the ring is seated in the
notch 24. The die may then be rotated by the
wrench since the pawl engages the side of one
of ‘the grooves. The wrench cannot slide lat
erally o? of the end of the sleeve, however, be
cause of the engagement of the pawl with the
ring 8. When the wrench is rotated in the op
portion of said channel and extending circum
ferentiallyaround the stem, a, ring disposed in
said groove and bridging said ?rst mentioned
grooves, drive means for said head comprising
an annular body adapted to be slipped over said
stem, a pawl carried thereby and held in spring
pressed engagement in said grooves and adapted
to provide a ratchet drive therewith, a slot in
said pawl for engagement with said ring, one
side of said pawl adapted to engage the side of
the channel.
4. In a ratchet threading die of the class de
scribed comprising a die head, a stem extending
from said die head, and provided with a plu
posite direction, causing the ratchet mechanism . . , rality of radially disposed longitudinally extend
ing grooves, and a shallow annular channel
to operate, the slanting pawl face engages the
formed in said stem intermediate the die head
side of the groove 5 in the usual manner, and
and the end of the stem, and a groove formed
raises the pawl out of the groove 5, where it
in the mid-portion of said channel and extend
rides across the land intermediate the grooves
inthe channel 6, until it drops on the other -\ ing circumferentially around the stem, a ring
disposed in said groove and bridging said ?rst
side of the land into the next slot. While the
mentioned grooves, drive means for said head
pawl is thus out of the groove 5 and may be out
comprising ,an annular body adapted to be
ofengagement with the ring 8, the side of the
slipped over said stem, a pawl carried thereby
pawlengages the side of the channel 6, prevent
and held in spring-pressed engagement with
ingthe wrench from slipping o? of the sleeve.
said grooves, and adapted to provide a ratchet
It will thus be seen that the handle is positively
drive therewith, a slot in said pawl for engage
retained in operative relation with the barrel
ment with said ring when the pawl ‘is in one of
at all times with no danger of accidental dis
the grooves, one side of said pawl adapted to
engagement.
engage the side of said channel when the pawl
- :One of the particular advantages of this ar
is out of the grooves.
rangement is that of manufacture, since the
5.. In a ratchet threading die of the class de
grooves may be accurately and easily formed in
scribed comprising a die head, a sleeve extend
the barrel when the die head body is cast, ‘with
ing from said die head, and provided with a plu
. out necessitating the additional use of sand cores
asiscustomary where the grooves terminate 65 rality of radially disposed longitudinally ex
tending grooves opening in the end of said stem
short ‘of the end of the barrel.
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spaced from the head and extending through
The ratchet mechanism may be ‘reversed in
theend of the stem, and a shallow annular chan
the usual manner by raising and rotating the
nel formed in said sleeve intermediate the die
‘pawl 180 degrees.
Having thus described my invention, I am 70 head and the end of the sleeve, and a groove
formed in the mid-portion of said channel and
aware that numerous and extensive departures
may be made therefrom without departing from
my invention.‘
I claim:
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1. A device of the class described including a
extending circumferentially around the sleeve,
a spring ring disposed in said :groove and bridg
ing said ?rst mentioned. grooves, drive means for
said head comprising an annular body adapted
2,255,009
to be slipped over said stem, a housing integral
with said body and a pawl carried thereby and
held in spring-pressed engagement in said
3
adapted for lateral engagement with said lock
ring to hold said body and ratchet together in
operative engagement.
7. A ratchet threading die of the class de
grooves and adapted to provide a ratchet drive
therewith, a slot in said pawl for engagement
scribed including a die head and a stem extend
with said ring when the pawl is in one of said
ing therefrom, said stem provided with a plu
?rst mentioned grooves, one side of said pawl
rality of longitudinally extending grooves open
adapted to engage the side of the channel when
ing through the end thereof, an annular chan
the pawl is passing from one of said first men
nel formed in said stem, a groove formed on
tioned grooves to another.
10 said stem extending circumferentially around
6. A ratchet threading die of the class de
the stem and located in said channel, and a
scribed including a die head and a stem extend
spring lock ring disposed in said last mentioned
ing therefrom, said stem provided with a plu
groove, ratchet drive means for said head com
rality of longitudinally extending grooves open
prising a body having a base formed therein'
ing through the end thereof, a groove formed 15 adapted to telescope over said stem, a pawl car
on said stem extending circumferentially around
ried by the body and spring means for holding
the stem and a spring lock ring disposed in said
the pawl in ratchet engagement with the ?rst
last mentioned groove, ratchet drive means for
mentioned grooves, said pawl adapted for lat
said head comprising a body having a bore
eral engagement with said lock ring to hold said
formed therein adapted to telescope over said
body and ratchet together in operative engage
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stem, a pawl carried by the body and spring
ment.
means for holding the pawl in ratchet engage
CARL H. INGWM.
ment with the ?rst mentioned grooves, said pawl
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