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Патент USA US3041636

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July 3, 1962
2 Sheets-Sheet 1
Filed June 6, 1961
July 3, 1962
Filed June 6, 1961
2 Sheets-Sheet 2
United States, Patent-:0 ” ICC
Patented July 3,. 1962
periphery in which theroller 72 engages to‘ rock the disk
Kent J. Batcheller, Newton, and Daniel R. McDougall,
Salem, Mass, assignors to Kent Mfg. ‘Cor-11., Newton
Upper Falls, Mass, a corporation of Massachusetts '
Filed June 6, 1961, Ser. No. 115,161
4- Claims. to]. 1-177)
as the plunger 14 reciprocates and thereby to reciprocate
the pawl 54. The pawl '54 is'pressed down by aspring 66 so that the tooth 56 bears on the track 40' but can
slide over the next connector member on the track when
the pawl is retracted so as to be
position to push the
next connector member onto the anvil when the pawl is
hnext advanced. For reliable operationof the, machine
it is necessary that the strip of connector members be '
This invention relates to an improved detent for ,a
machine for crimping electric connector members on 10 held ?rmly while the pawl is being retracted'so that its
tooth 56 will engage behind the next connector‘ mem~
the ends of wires. A machine of this kind is illustrated
ber 32 which becomes the leading member of the ‘series
when the completion of the downward stroke of the,
plunger 14 severs the crimped connector member from
series, customarily ?ve hundred feet in length. The 15 the strip 34. It is also important that the strip be re
strained from being projected beyond its proper position
series is fed into a crimping machine arranged to receive
on the anvil when advanced by the sudden forward move
the stripped end of an insulated wire and operable to
and described in U.S. Patent No. 2,930,044. For rapid
and economical assembling of ‘wires and electric con
nector members, the latter’ are’ supplied in connected
crimp the wire-gripping portion of the leading connector “ _ ment of the pawl 54. In earlier machines of this kind
member in the series on the inserted end portion of a
a drag shoe 80 has been employed to be pressed fric
member ‘from the series.
spring '82 within a vertical slide 83 which carries the
shoe 80 and is slidable in suitable guideways in the frame
wire and at the same time to sever the leading connector 20 tionally on a portion of the strip 34 by a compressed
The series is then advanced
just enough to bring the next leading member into posi
12. The spring 82 presses a plunger 84 upward against
tion to be crimped on the end portion of another wire
the cam surface'86 of a turn button 88 mounted on the
inserted for the purpose. The feeding of the series is
done by a pawl which reciprocates in step with the rise 25 frame 12. As indicated in FIGURE 1, the cam surface
86 is such that by turning the turn button 88, the plunger
and descent of the crimping tool. After a forward move
84 can be allowed to move upward sufficiently to relieve
ment of the pawl to move the leading connector member
the pressure of the spring 82 downward on the slide 83
into position to be crimped, it is important that the series
and the shoe ~80‘ carried thereby.
be de?nitely held against any reverse movement when
the pawl is retracted for the next feeding stroke. This 30 According to the present invention a tooth 90 is pro
vided on the‘bottom of the shoe 80 and located in line
is done by means of a detentacting on a portion of the
with the necks 36 which connect the connector members
series near the leading connector member. It is an object
32 to the continuous strip 34. The_tooth 90 projects
of the present invention to provide an improved detent
below the bottom face of the shoe 80 a distance slightly
for a crimping machine of the kind hereinafter described.
For a more complete understanding of the invention, 35 less than the stock thickness of the necks 36 and strip
34-. For example, a commonly used ‘gauge of metal for
reference may be had to the following description thereof,
electric connector members 32 is 0.021”. For use on
and to the drawings, of which
a series of such connectors a shoe 8% with a tooth 90
FIGURE 1 is a front elevation of a crimping machine
having a detent embodying the invention;
FIGURE 2 is an end elevation of the same;
FIGURE 3 is a section on the line 3-3 of FIGURE 1;
FIGURE 4 is an enlarged perspective view of the
detent shown in the other ?gures; and
FIGURE 5 is a perspective view of part of a strip of
electric connector members:
FIGURES l and 2 illustrate a crimping machine for
electric connector members, this machine having a base
extendingdown .018" to .020" may be employed. The
40 forward face of the tooth W is perpendicular to the
‘track to catch behind successive necks 36. The rear
face of the tooth 90 is sloped so that when the series of
connector members is fed forward by the pawl 54, the
neck 36 which is immediately behind the tooth 90 can
cam it up enough to pass under it, whereupon the shoe
snaps downward for resumed frictional engagement with
the portion of the continuous strip 32 beneath it.
Since the leading connector member must be accurately .
10 and an upright frame 12 preferably integral with the
placed on the anvil when the plunger carrying the crimp
tically slidable. The plunger has an upper portion 16 50 ing tools descends, and since at that moment the tooth
At one end of the frame 12 a plunger 14 is ver
90 should be engaged against the rear edge of a neck
36 in the series, it is necessary for the tooth 90 to be
adapted to be secured in a power press by which it is to
be reciprocated to drive crimping tools 24, 26, carried
by the plunger, down on the wire-gripping elements of
an electric connector member supported on a suitable
anvil 28 mounted on the base 10.
The machine is designed to operate on electric con
nector members 32 which are supplied to it in a series
the units of which are joined to a continuous strip 34 by
short necks 36. One form of connector member is shown
accurately spaced from the anvil, such spacing depend
ing on the distances between the lines of centers of suc
cessive connector members in the series.
As such dis
tances can and do vary in series of different connector
members, the spacing of the shoe 80 from the anvil must
be adjusted accordingly. At present most connector
members of the type illustrated are made with lines of
in FIGURE 5 by way of example. The leading portion 60 centers spaced either 0.440” or 0.530". Hence, the
of the strip or series of connector members approaches
the anvil 28 on a track 40 which may be a separate mem
ber removably secured to the base 10*. As the machine
shoe 80 is constructed to be secured to the slide 83‘ in
either of two positions at corresponding distances from
the anvil. For this purpose the shoe is removably se~
cured against the lower part of the slide 83 and is pro
step by means of a pawl 54 having a tooth 56 which rides 65
with a horizontal rabbet groove 92 in which is
in a shallow central channel 58 in the track 40‘ and en
slidably ?tted a ridge 94 on the slide 83-. The shoe 80
gages behind the leading connector member in the series
is secured to the slide 83‘ by a screw 96 which passes
to push such member onto the anvil 28. The pawl 54
through a horizontal slot 97 in the shoe and into a
is pivotally attached to a disk 62 which is rocked about
its axis by the reciprocation of a roller '72 mounted on 70 threaded hole in the slide 83. The screw 96 has a head
98 which ?ts into either of two countersinks 100', 102
an arm 74 carried by the plunger 14. The disk is rock
which are carefully located to ensure proper spacing of
ably mounted on the frame 14 and has a recess 76 in its
is operated, the strip is fed along the track 4t} step-by
3,041,619 r
the tooth 90 from the anvil 28 for connector members
having either spacing between lines of centers.
ranged to catch behind a part of a connector member
in a series on said track to hold said series positively
against retrograde movement on said track, and releas
able spring means pressing said shoe down on said
When a fresh series of connector members is to be in~
iserted into the machine, the. turn ‘button 83. is turned. to
relieve the
82. . Toilift the ‘shoe so that the’tooth
be clear of the track 40ito facilitate the insertion
_ ior'removaltof ,a series of, connectors, a springi104
in- '
stalled in a bore in the base-10 directly below the slide .7
3. Mechanism as described in claim 1, said shoe having
10 a horizontal rabbet groove ?tted by a portion of the
vertical member of detent, said shoe having a horizontal
slot therethrough with a pluralityof countersinks, and
'a screw passing through said slot and threaded into said
vertical member, said screw having a head ?tting into
justment or removal of a series‘ of connector members
under the shoe.‘
of positions of horizontal adjustment.
83 so that it presses against the bottomnof the @slide. '
When the spring 82 is relieved, the weaker spring 104
v, lifts _,tl1e slide 83and shoe SGitofacilitate insertion, ad
2. Mechanism» as described in claim 1, and means for
positively securing said shoein any one of a plurality
a 'i
.We claim:
",1 V 1. !In'-a machine for crimping the wire-gripping por 15 any one of said countersinks to hold said shoe to said
tions, of electric connectors supplied‘ thereto in a con
vertical member in a selected position of horizontal ad
nected series, said machine having a ‘base with, a track‘
_ thereon and an upright frame" having a vertical guideway,
4. Mechanism as described in claim 1, and spring
.a detent slidable in’ said guideway, ‘said detent comprising
means under said detent arranged to lift said detent when
_ a. vertical member ?tted in said guideway and a shoe on
the ?rst mentioned spring means is released,
said member horizontally adjustable in‘ the direction of 1
‘ the track, a small tooth on the bottom ofsaid shoe ar
VNo references cited. '
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