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Патент USA US2113087

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April`5, 1938.
'
J. JENSEN
2,113,087
MANUALLY OPERATED PRESSURE TOOL
Filed Ap'ril 1o, 1937
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2,113,087
Patented Apr. 5, 1938 l
UNITED STATES >PATENT OFFICE
2,113,081MANUALLY OPERATED PRESSURE TOOL
John Jensen, Rockford, Ill., assignor to Whit
ney Metal Tool Company, Rockford, Ill., a cor
poration of Illinois
Application April 1o, 1937, serial No. 136,151
s claims., (ci. 14o-113)
The invention relates to manually manipulable
pressure-tools such as splicing tools for wire, sheet
metal shears, punches, and the like.
The general object of the invention is to pro
vide an improved device of the class described
’ which includes a free-running antifriction gear
`ing capable of extremely large force multiplica
tion.
_
.
,
A more specific object of the invention is to
10 provide an improved splicing tool adapted to effect
preferably includes a pair of relatively movable
jaws which may be detachably secured together on
opposite sides of the dies- to form a strong rigid
support during the splicing operation and which
may then be swung to open position to facilitate`
ready removal of the spliced wire. Thus, upon
reference to Fig. 1, it will be seen that the die
I0 is dovetailed in a supporting block I6 slidably
mounted on wear >plates I‘I-I8 in a U-shaped
yoke I9 forming one supporting jaw while the die l0
a pronounced ñow of metal in the connector sleeve
II is dovetailed on the face of a second jaw or
in clamping the same to the associated wires.
link 20 pivotally connected to one oi’ the arms of
the yoke I9 by a pivot pin 2|. The yoke I9 has
Further objects and advantages oi’ the inven
a base plate I9“ formed on the lower side thereof
tion will become apparent as the following de
15 scription proceeds and -the ‘ features of novelty which may be utilized to secure the same in posi
which characterize the invention are pointed out> tion. The supporting block I6 for the die I0 is
V_with particularity inthe claims annexed to and
forming a part of this speciflcatlon.
For a better understanding "of the invention
reference may be had to' the accompanying draw
-0 ing in which
.
restrained against sidewise movement through
splined connections formed by ribs v22 and 23 on
the inner faces of the arms of the yoke I9 fitting
within complemental grooves in the wear plates
I1 and I8, respectively. A detachable connection
'
20
Figure 1 is a side elevation partly in section 'of ' between vthe upper end of the link 20 and yoke
I9 is formed by a second link 24 pivoted at its
inner end in the bifurcated end of the upper yoke
Fig. 2 is an enlarged fragmentary vertical trans
arm by a pin 25 and secured to the-link 20 by v25
verse section along the line 2-2 in Fig. 1.
25
Fig. 3 is an enlarged fragmentary vertical a removable slip pin 26. It will thus be seen
that when the link 20 is swung to the vertical
transverse section along the line 3-3 in Fig. 1.
Fig. 4 is an enlargedy fragmentary »horizontal position shown in Fig. 1 andthe slip pin 26
inserted into the registering openings in links 20
transverse section along the line 4-4 in Fig. 1.
Referring more particularly to the drawing, the and 24, a strong rigid support is formed for the 30
30
invention in its exemplary embodiment has been dies Ill--I I. After the die forming operation has
shown for purposes of illustration as applied to been completed the slip pin 26 may -be removed
and the link 20 rotated in a counterclockwise di
a’portable wire splicing tool having a pair of co
rection to facilitateeasy removal of the spliced ,
operating mating dies Ill-II for clamping suc
cessi've portions of a tubular connectorv I2 about wire. Upon reference to Figs. 1 and vit will be 35
the abutting ends oi’ wires I3-I4 (Fig. 4). It seen that the dies I0 and II are respectively held
a splicing tool embodying the invention.
. will be understood by those _skilled in the art, how
ever, that mechanisms embodying the invention>
may also be adapted for a wide variety oi' other
4 O forms of dies and metal forming tools as well as
other devices. The mechanism herein illustrated
in position- against lateral displacement by die
retaining clips 21 and 28.
'
.
Y
'
The antifriction- gearing I 5 is adapted to se
lectively move the die I0 toward and away from 40'
the die I I and comprises in general a pair of tele
includes in general a supporting structure for the
scoping members havingaseries of balls engag
tremely heavy pressure on the dies, this- pressure
members comprise a rotatable spindle 29 and a
dies III-II and a'novel form of antifriction gear- . ing both members tov form the equivalent of a
>ing designated generally by the numeral> I5 which smooth running screw thread therebetween. In ,
the particular construction illustrated these 45
45 may be manually manipulated to-exert-an ex
being of the order lof -35 tons or more. >The par- ,
ticular form of dies illustrated is adapted to `carry
out an improved method of wire splicing tcffash
50 ion a novel form of splice. Neither thëifmethod `
of forming this splice nor the completed article
forms anypart of theA 'present invention but is '
described and claimed in my copending applica
tion Serial No. 149,414 ñled June 21, 1937.'
55
_
The supporting _structure for the dies Ill-II
telescoping sleeve`30 positioned in a cylindrical
housing`3| formed in the base of the yoke I9. A
dog screw 32 (Fig. 2) bearing against a iiattened
surface 33 formed on the side of the sleeve 30 50
prevents rotation- of the sleeve in: the housing.
Complemental spiral grooves 34‘ an'd 35 are
formed on the adjacent surfaces of the spindle '
29 and sleeve 30, resrïctively, and are adapted to
receive a‘seriesl of balls 36. 'I'he balls thus posi
.Y
2
2,113,087
tioned in the spiral grooves formed in the sleeve
and spindle constitute a free running antifr-ic
end of the spindle. It will be noted upo'n refer
ence to Fig. 4 that the upper one of the cap screws
tion equivalent of a screw thread between these
46 also serves to hold the die retaining clips 21 in
telescoping members. Annular end plates 31 and position. As the spindle 29 is rotated by a suit
39l having graphite packings 39 and 49 therein >able manual operating handle 43 connected
are detachablyl secured to opposite ends of the
sleeve 3|! and prevent the entrance of dirt or other
foreign matter into the- screw mechanism. An
annular shoulder 30'L in the` housing 30 abuts
10 against an annular flange 3i* on the sleeve 3| to
prevent outward movement of the sleeve.
,
In accordance with one aspect of the present
invention, an improved arrangement is provided
for preventing jamming pf the balls 36 as they
approach the ends of the spiral grooves during
the rotation of the spindle 29. In general, an ar
rangement is preferably provided for ejecting'the
balls as they approach one end of one of the spi
ral grooves and returning them to the opposite
20 end thereof. Thus, upon reference to Figs. 1 and
3, it will be seen that as the spindle 29 is rotated
in'a clockwise direction (as viewed in_Fig. 3) the '
balls 36 are « directed upwardly from the spiral
grooves -34 and 3,5 by the curved inner face 4I of
25 a dog 42 into a transfer passage 43. This trans
fer passage is- formed by a groove in the upper
side of the sleeve 30, its upper side being closed
by the housing 3i. The dog 42 is illustrated in
the form of a pin inserted in the sleeve 30 and
30 arranged generally tangentially to the base of the
spiral groove 34 formed inthe spindle 29. As the
thereto by a socket 49 the die supporting block
I6 and its attached die I9 are thus moved to
ward or away from the cooperating die II, de
pending upon the direction of rotation of the
spindle.
10
In the operation of the _mechanism described
above. the tubular connector sleeve blank »I2 is
slipped over the adjacent ends of wires I3 and I4
which are to be spliced together and the con
nector is then positioned between the dies III-_I I.
The link 20 is swung to its vertical position shown
in Fig. 1 and the slip pin 26 inserted ’so as to
maintain -the"dies in alinement during the clamp
ing operation.' The die I9 is then moved toward
the die I I to bring the same into clamping engage
ment with the connector sleeve I2 by rotating the
manual operating handle 49. It will be noted
that upon reference to Fig 4 that the active faces
of the dies III-II are adapted to cover only a
relatively small portion of the length of the con 25
nector sleeve so that the clamping operation is
repeated a number of times throughout the length
of the sleeve in order to clamp it in position on
the wires. Inçview `of the antifriction gearing
arrangement utilized it is possible to exert an
extremely heavy pressure'of the order of 35 tons
rotation of the spindle continues, the balls move ' or more on the dies even though the mechanism
is merely manually manipulated. As a conse
quence, a substantial flow of metal in the con
_nector sleeve may be effected so that a verystrong
splice is had. In fact, v'it has been found that ’
when using such a mechanism with properly
through the transfer passage 43 to the outer end
thereof from which they are directed by a second
35 dog 44 (Fig. 2) having a curved- inner face 45,
>back into the cooperating spiral grooves. When
the spindle 29 is rotated in the opposite direction
the balls progress through the spiral grooves and
back through the transfer passage 43 in the op
v40 posite direction. It will thus be seen that a
_smooth free running equivalent of a screw thread
is had in which the possibility of jamming ofthe
balls at the end of the spiral tracks which carry .
them is obviated.
45
-
Y
,
An arrangement ofthe type described in which
the balls in the spiral grooves areprevented from
jamming by ejecting the same at theend of their
path of travel in .the grooves is particularly
adapted for .use in a splicing tool such as that
60. herein disclosed or other devices in which the re->
tractive movement of the operating members is
shaped dies, a splice can be formed which has
a tensile strength greater than that of the wires
which are joined together.
40
„ Although a particular' embodiment of the in
vention has been shown and described in some
detail for purposes of illustration, there is no
intention to thereby limit the invention toy this
particular embodiment but, on the other hand', the 45
appended claims are intended to cover all modi
fications within the spirit and scope `oi? the inven-V
tion.
.
`
.
I claim asîmy invention:
1. IA splicing tool device of the class described
comprising, in combination, cooperating relatively
movable metal forming compression die members,
not- impeded by the work piece. Thus, in the
splicing tool hereinbefore described, the die I6 -screw means associated-with said metal forming.
may be freely retracted after compressing the members for exerting an extremely heavy clamp
connector sleeve I2 without sticking vdue to its, ing pressure thereon by manual manipulation in 55
contact with the sleeve. As a result,'there is no cluding two members arranged in telescoping re-"`
jarring effect on the balls 36 which -would cause lation with each> other and a series ~of balls en
them to -be loosened. Consequently, they are gaging both of said telescoping’members to form
likely tobecomemjammed'vand Aiiattenedafter con#>
60 tinued use if some arrangement’is not provided
for ejecting them from the Aend of their path
of travel in the spiral grooves. In the case of
punch presses and similar mechanisms, however,
- _the retractive movement of the punch or die is
65 impeded by its‘frictional contact with the metal
throughwhich it is passed so that it pulls free
with'a jerk. This uneven movement ordinarily
the equivalent of a smoothly running screw thread
therebetween,~ at least one of said telescoping- 00
members having a spiral groove therein receiving
said balls, and means for ejecting the balls from
between. saidtelescoping members as they ap- .
preach the ends of said groove to prevent jam
ming thereof.
65
2. A splicing tool device of the class described
comprising, in combination, cooperating relatively
serves to loosen the balls in the spiral grooves so
movable metal forming compression die members,
that in such instrumentalities it is frequently
screw means associated with said metal forming
unnecessary to use such an ejection arrangement
as is herein set forth. ,
v
The inner end of the spindle 29 is operatively
- connected to the supporting block >I6-for the die .
I9 by a pair of cap sci’ews 46 fitted in opposite
75 sides of an annular groove "formed in the inner
members for exerting an extremely heavy clamp 70
ing pressure thereon'by manual manipulation in
cluding two members arranged in telescoping re
lation with each other anda series of balls engag
ing both of said telescoping members to form the
equivalent of a smoothly running screw thread 75
2,118,037
therebetween, lat least one of said telescoping
members having a spiral groove therein receiving
said balls, and means including a transfer pas
Asage disposed exteriorly of said groove for shift
ing the balls from one end of said groove to the
other to prevent jamming thereof.
l
3. A portable splicing tool for compressing a
generally tubular connector about the abutting
ends of a pair of wires to be spliced, comprising>
in combination, a pair of mating dies adapted to
receive a `portion of the connector therebetween,
a yoke having its arms disposed on opposite sides
,
.
`
.3 l
of one of said dies to form a sliding support
therefor, a link pivotally connected to one of the
arms of said yoke and forming a support for the
other of said dies, and screw means associated
- pressure
with said
thereon
dies for
by manual
exerting
manipulation
a strong clamping
to cause .
a substantial iiow of metal in the connector includ
ing two members arranged in telescoping rela
tion with each other carried by,said yoke and a
series of balls engaging both members to form v10 l
the equivalentof a screw thread therebetween.
JOHN JENSEN.
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