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Патент USA US2120966

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June 21, 1938.
2,120,966
, M. J. CLARK
MATERIAL HANDLING APPARATUS FOR MACHINE OPERATIONS
Original Filed Feb.’ 4, 1952
8 Sheets-"Sheet l
\L-J.
INVENTOR
‘Max
J‘ Clark
/, ATTORNEY 7W
v
June 21, 1938.
O
M. J. CLARK
.
, 2,120,966
MATERIAL HANDLING APPARATUS FOR MACHINE OPERATIONS ~
Original Fziled Feb. 4, 1952
x
a sheets-Sheet 2
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INVENTOR
Mar J CZdr/Y
BY
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M, mm wj-W
ATTORNEY,
.
June 21, 1938.
v
'
M_ J_ CLARK
2,120,966
MATERIAL HANDLING APPARATUS FOR MACHINE OPERATIONS
Original Filed Feb. 4, 1952
8 sheaths-Sheet 3
24
||
||
INVENTOR
Mar J.’ Clark
BY
M,
ATTORNEY
.
June 21,1938.‘
M. J. CLARK
.,
_
2,120,966
‘ . MATERIAL HANDLING APPARATUS FOR MACHINE. OPERATIONS’
Original Filed Feb. 4, 1952
8 SheetseSheet 4
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INVENTOR
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Max J.’ Clark,
BY
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ATTORNEY
.
,
June 21, 19,38.
2,120,966
M. J. ‘CLARK I
MATERIAL HANDLING APPARATUS FOR MACHINE >OPERATIONS
Original Filed Feb. 4,;1952’
v
8 Sheets-Sheet 5
BY_
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MIQQM$W '
ATTORNEYS
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.
June 21,1938.
M_ J_ CLARK
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I 2,120,966
MATERIAL HANDLING APPARATUS FOR MACHINE OPERATIONS,
Original Filed Feb. 4, 1932
/
A
8 Sheets-Sheet 6
a0
INVENTOR
Max J.’ CZar/r.
June 21, 1938.
'
M_ J, ‘CLARK
2,120,966
MATERIAL HANDLING‘ APPARATUS FOR MACHINE OPERATIONS
Original Filed Feb. 4, 1952
—|____ __
_ __
a Sheets-Sheet v
_._.__.
INVENTQR
Mar J.’ Clark
. ‘
BY
‘
ATTQRNE 5.
v
June 21, '1938.
2,120,966 "
M. J. CLARK j '
MATERIAL HANDLING’APPARATUS FO'R MACHINE OPERATIONS
Original Filed Feb. 4, 1932
8 Sheets-Sheet 8 Y‘
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Patented-June 1938
' 2,120,966
UNITED sTATcS PATENT. OFFICE
2,120,988
MATERIAL HANDLING APPARATUS For. ~ i
‘
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MACHINE orsaa'rrons
'.
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Max J. Clark, Pontiac, Mich.
Application rem-um 4, 1932, seriai No. 590,939;
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Renewed February 1, 1986
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"'30 Claims. ‘ (0!. 29-33)
taken. through line 9-4-9 of. Fig. 8 in the direction
This invention relates to a new method and ap
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paratus for automatically handling metallic work 01’ the arrows.
Fig. 10 is a detail side view of the abutment
pieces,- parts or articles for the purpose of en
members for propelling‘giihe slides.
Fig. 11 is a detail rear view of the construction 5
"abling a series ofwmachine operations to be per
5' formed successively on each‘piece or part, the
‘shown in Fig. 10.
invention being especially adapted for applica
Fig. 12 is a plan view of one of the table sec- .
_ tion in connection with the machining of metal
parts ‘where mass production is conducted,~51,1ch
Fig. 13 is a‘ side elevation of the construction
as cylinder blocks, cylinder heads, transmission
10
shown
in Fig. 12.
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10 housings, ?ywheel housings, etc., in the auto-'
Fig. 14 is a detail section taken through line
tions.
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mobile industry.
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An object of the invention is to provide a method " ii—id of Fig. 12 in the direction-of the arrows.
v
_° Fig. 15 is’apartial sectional elevation taken
and apparatus in which the work pieces may be
substantially through line i5—\-i5 of Fig. 13.~
conveyed in succession from one} metal working
‘Figs. 16 and 17 are detail views of the sliding 15
15 machine or machine tool to another and the
separate work holders handled in a continuous
cycle, in which these work holders may be located
and held at successive stations for machine. oper-.
ations on the work, in which the method of con
‘20 veying and handling the work and work holders
and the improved construction "of the apparatus
cam bar.
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Fig. 18 is a fragmentary plan view illustrating 3.
the return chain conveyor.
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Fig. 19 is-a section through line lit-i9 of Fig. _
' 18 in the direction of the arrows.
is such as to require ‘no substantial. increase in
?oor space while permitting ample '?einbility to
U meet changes in machining requirements par
25 ticularly in connection with'line production; and
v in which full automatic handling is possible thus
Fig. 20 is an end elevation illustrating’a modi- '
iied form .of elevator mechanism‘ for the work
holder slides.
' .
Fig. 21 is a side elevation of theconstruction
shown in Fig. 20. ~
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Fig. 22 is a plan view of the automatic control
saving labor ‘expense and speeding up production ' means for the several mechanisms of the appa
to a greater degree.
ratus.
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Other objects of this invention will appear in
30 the following description and appended claims,
reference being had to the accompanying draw
ings forming a part of this speci?cation. wherein
' like reference characters designate corresponding
parts in the several views;
35
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Figs. 1 and 2 are plan, views which takent'b
'gether illustrate the entire apparatus which may
be utilized» for carrying out the present invention.
Figs. 3 and 4 are side elevations of the con
struction shown in Figs. 1 and 2,- which taken
v40 together illustrate the complete apparatus.
Fig. 3A is a left hand elevation of/the front
end of the machine shown in Fig. 3.
' ‘
Fig. 5 is an end elevation taken through line
5-5 of Fig.'2 illustrating a. section of the appa
45
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ratus.
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Fig. '6 is an end elevation-"taken through line
B-L-B of Fig. 1 illustrating another section orthe
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machine.
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Fig. '7 is an endielevation-taken through line»
50 ‘|--'I of Fig. 2 illustrating another, section _-of the
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of Fig. 22 (in the direction of the arrows‘.
' Fig. 24 is a side elevation.
80
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Before explaining in detail the present inven
tion it is to be understood that the invention
1 is not limited in its application to the'details of
' construction and arrangement of, parts illustrated as ’ -
in the accompanying drawings, since the inven
tion. is capable of other embodiments and of bej
ing practiced or carried out in various ways. Also
it is to be understood that the phraseology or
terminology employed herein is ,for the purpose 40
of description and not of'limitation, and it is
not intended to limit the invention claimed here-7
in beyond, the requirements of the prior art.
_
The apparatus is designed for. usevin rectory
production where a series or succession of ma- 45
chining operations are performed on similar metal
parts or‘ pieces. For example, in mass produc»
tion a series of machining operations may be per:
. .
formed on a piece of work such as an automobile‘
cylinder block. and where the same operations‘ so are carried out on each one of many thousand
Fig. 8 is a fragmentary top plan view, partly identical pieces, the present invention provides a.‘
method and means by which this can-.be accom
broken away, illustrating the mechanism for pro - plished
automatically with the .elimination of ,
pelling the work holder slides.
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time and labor heretofore necessary in handling 5'5
machine.
'. 55
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Fig; 23 is a vertical sectionthrough line 23-_-2li
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Fig.'9'is a longitudinaliragmentttry section
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parts from one operation to another. The appa
Referring particularly to Figs. 8, 9,_14_ and 15,
each table member 231s provided witha central
kratus however, is susceptible of wide ?exibility
and may be ‘adapted readily to various machining
operations in line production.
‘
The invention is particmarlyapplicable in con
nection with machines known as the unit type
automatic cycles machines for performing certain
typical machining operations,.such as drilling,
reaming, tapping, threading, boring, counter
boring, counter-sinking, facing, milling, broach
ing, spinning, knurling, swaging, keyway cut
ting,- etc.
>
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In the 'drawings there is shown an apparatus
representative of one way in which the invention
15 may be carried out. Standard types of metal
_ working machines of the unit type are employed,
recess 28b ,within which is mounted an hydraulic
cylinder 33 provided with a ram or piston rod 34
carrying at its forward end an abutment or head
35 having a ?at base 356 adapted to slidefreely,
during reciprocationof the ram 34, on the list
bottom 280 of the recess 28b. ‘ Piv‘oted at 31 with
in a recess in the upper end of the member 35 is
a dog or latch 36 which is weighted at 38 so as 10
normally to hold the dog in the position shown
in Figs. 9 and 10 so as to engage a transverse
abutment bar 39 bolted to the under side of each
slide F. _ The dog 38 is provided with a cam sur
face 36a so that when the "ram is retracted the 15
dog can pass‘ the abutment bar of-the ‘receding ‘
slide into position‘ behind it. In the present in
stance the cylinders 33 of the several table sec
four such machines being illustrated by way ‘of
example, although-a greater or less number will
Lbe used depending upon the work to be done. A ' 'tions are arranged in staggered relation, one
to
duplex‘milling machine is shown at A, a multiple cylinder and ram being mounted within each
I
drilling machine at B, a vertical drilling or tap
table section 28, and all of the cylinders operated
ping machine at C, andila duplex drilling or tap
in timed relation by control mechanism herein
ping machine at D. these machines being ar
after described. ranged in line fora sequence of operations on
Automatic means is also provided for locating
25. each work piece.
and clamping each work holder slide F in exact
is ‘The work is conveyedwith relation to the ma- - position opposite each machine for the machin 25
chines from -one operating station to another by ing operation on. the work piece carried by the
. means‘ of work holders mounted on slides adapted
_ to travel in a horizontal guideway formed on the
30 top of a sectional table. Each section E of the
table may be similar and any number may be‘
bolted together end to end to provide‘ a con
tinuous conveyor way past the machines.
Referring particularly to Figs. 5- to '7 inclusive
35 and 12 to 14 inclusive, each table section E com
p?ses in the present instance a base 25 adapted
to be bolted to the floor at 25a. Mounted. on the
base at each longitudinal side of the section are
upright side frames 26 and 26b terminating at
'4o'their upperends in inwardly over-hanging top
supporting portions 2.1._ The frame members 26
slide.
‘
Referring particularlytn Figs. 12\ to 1'1 inclu- '
sive, there is mountedlin a vertical recess in the 30
top of .each table section 28 a spring pressed
locating pin 40 which is adapted to mate with a
/recess in the under side of the slide F. This lo
eating pin or°plunger is pivoted at its lower end
to one end of a pivoted lever 4| mounted within 35
a recess 42a in a block 42 bolted to the under side
of the table top 28. This block has a central‘
opening through which extends a bar 43 held in
position byv a bottom retaining plate 44. The
central part of this bar at its underside is pro
vided with rack teeth and at its upper face with
and 26?) are bolted to the base at 28c. Bolted at a cam recess 45 cooperating with the free end of
28a to the upper fiat surtacesof the portions 21 is the lever 4|. At
7
> left of_ the recess
the right and
a table top 28. This table proper is formed cen
45 the bar 43 ,is alsomachined at its upper face
_ 45.tral1y and longitudinally thereof with guideway ’ to provide angular cam slots 46 within whichex
portions 29. Also carried thereby is a v-shaped _ tend pins and rollers 41, secured to a laterally 45
‘ guide member 30 and a ?at guide strip 3|, these shiftable plate 48. Yieldably attached to oppo- ‘Y '
parts together with the ways 28 providing guide ' site sides of this plate by springs (not shown) are
means for a series of slides F. As hereinafter de
a pair of-wedge blocks 43 and “ill which extend
‘ 50 scribed, each slide F of the series carries “a work I through openings in‘ the lower ends of pull rods
50
holder which in turn supports the workin posi
tion for operation by the machine tools. Each
.5lito the upper ends of which are secured clamps '
52. The teeth of the cam bar=43 mesh with a
slide F is formed with projecting‘ guide portions “pinion
53 cut into the end 1of a.- shaft 54 which
32 extending into the ways 29 andalso has on its
f55vunder side a V-shaped groove into which the
wedge member 30 ?ts and alines the slide. _The
slides Fare thus held ?drmly in position within
the alined guideways of the table sections and
are-capable of sliding longitudinally through the
\60 gui-{cleways from one machine to the next.
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In the present instance the construction is
lpreferably such'that the slides!‘ are arranged
at its outer end is provided with a pinion 55 mesh
ing with teeth out. in a vertical piston rod." 55
' operated from an hydraulic cylinder 51.
'A single .
rack bar 43, or a series thereof extending end to,
end may be provided in the table sections and
these may be operated by the single"cylinder,51,
or a plurality of cylinders may be employed which 60
are automatically controlled in timed relation to
Iothe; mechanisms
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in pairs in abutting relation.-Jeach pair of slides _
will be'understood from theforegoing that
having a total length corresponding to the length theit slides
F are propelled preferably, although
6d of each table section, and mechanism is provided. not'necessarily, in pairs, and in abutting relation
in the present instance for shifting all of the Y the length of-the tablesections'l _ The length of
' ;_slides s?nultaneously in pairs.’ This mec anism the stroke of the ram 34 of each cylinder 33 is
may be arranged to shift the slides singly where such as to move‘each slide onenhalf the length
_. machine operations require-‘a di?erentdwell of of a table section and a distance‘ corresponding
70 work holders at di?erent stations. Such mecha
closely to the required ‘travel necessary to_posi
nism may be operated hydraulically, electrically, . tion any one of the slides at ‘a given machine 70
" pneumatically,‘ or through other suitable auto
operation‘. When a slide reaches a position cor- matic mechanical means. In‘ the'p'resen't in _ responding to the end of the stroke of the ram 34
stance this is accomplished by. means of ‘rams " the cylinder 51 will Pbe automatically operated
‘ 76 operated from hydraulic cylinders.v .
shifting the cam bar '43, causing the lever end 4|
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2,120,966
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to drop into the recess 48 whereby the locating
the base of which is bolted to the base'of the ma-
pin 48 will be pressed upwardly and will lodge
in the locating hole in the slide F thus locating
chine. Attached to the table is aram 88 oper
ated from an hydraulic cylinder 88. [It will vbe
ment with the side ?anges'of the slide F, thereby
will be<propelled from the platen‘ or table 84 onto
the table section’ E at} the entrance of {the -'ma-.
‘
the slide in proper position. Thereupon the wedge ' .understood that each slide F will be elevated -on
the-‘table 84 into the horizontal plane (of the
5 49 will be shifted laterally in the same direction
horizontal guideway in the table sections _E and
to 'force the clamps 52 downwardly into engage
v clamping the slide rigidly in position.
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Referring particularly to Figs. 2 and 4, the chine‘by'mea'ns of an hydraulic cylinder alqcar 10
a reciprocating ram 92. The cylinders 9|
exitvend G of .the guide way through the table 'rying
and 88 are supplied through an hydraulic pump
sections ‘is open. At this point the "work piece";
having been operated upon successively by the ' be operated from an electric motor-85. The
machines A, B, C, and D, will be removed from the machines A, B, C and D, are operated in the
work holder carried by the slide Ffand the slides conventional manner by means of electric motors 16
with their work holders will be propelled ‘in suc f 86, 91,, 98 and 89.
. In the preferred form
- cession out of the guideway onto‘ a table 58 hav
ing an alined guideway into which the guide
vportions 82 of the slide will fit. The table 58 is
carried by an upright back plate provided with
O guideways 58 cooperating with mating guides I58v
carried by a column 8|, the base 82'of which is
bolted to the base- of the apparatus. The table
58 is thus carriediby a vertically movable slide
the ‘slide sections and
their'work holders are preferably returned from
.the exit end ‘of the apparatus .to the entrance
end through a tunnel within the framework of
the table sections. _If desired these sections may 20
be returned by an overhead conveyor above the
‘ table sections‘ and machines, in the manner 1
lustrated, for example, in Figs. 20 and 21. It is _
preferred that the return conveyor operate either
attached to a vertically reciprocating ram 64
above or through a tunnel below the-'table sec
25 operated from an hydraulic cylinder 88.
25
tions since this method ‘has the advantage ofv
conserving ?oor space in the plant'and facilitat
After 'the slide has been propelled onto the
table 58 the latter is lowered by the ram to the
ingaccess to the machines.
dotted line position shown in Fig. 4 and at this
point the slide with its work holder is. propelled
Referring to Figs. 20 and
elevator mecha- -
onto rollerways ‘85 (see Figs. 4 and 15). ‘This
nism is provided for transferring the slides and
hydraulic cylinder 88” carrying a horizontally re-'
ciprocating ram 81. The cylinders 63 and 88‘are
higher level. This elevator mechanism comprises
latter operation is carried out by means of an *' work holders from the level of the table 28 to a
a transfer table iil‘i, similar to the tables 88 and
M. having an upright back plate Hi2 provided
with guides W8 .coopefating with guides 1188 car 35
ried by a column Hi5 bolted to the base W8.
cohtrolled‘from an hydraulic pump (it-operated
has byan electric motor,,88. This ram mechanism
88 and‘ 81 is automatically, operated and timed by _,' ‘Frame members iii‘! are bolted to the side frames
the control mechanism hereinafter described.‘ 1
' The rollerways 85 comprise spaced longitudi
88 and 2Bband1to the upper ends of these frame
members are bolted spaced horizontal supporting
nally aligned rolls carried by angle brackets ‘i8
40 secured to the base of the machine and this roller
way extends ‘through a tunnel formed between
the top. bottom and upright sides 28-and‘28b of
bars i88‘forming an upper frame I88 carrying ‘
angle brackets I88 which support spaced lines of
rolls H8 upon which the slides F travel.‘ The
slides are“"propel_led in succession by means ‘of
a conveyor chain H2, traveling at opposite ends
of the machine over sprockets Hi. This conveyor
the table vframework. ,When the slides F are
‘successively propelled onto the roller‘ways 65 they
' are picked up in succession by a chain conveyor
chain carries at intervals a series of dogs similar
‘il' (Figs. 18 and 19) traveling between the-roller.
'to the dogs ‘i2 which engage the ends‘ of the slides.
. ways ‘Wand mounted on the base 25 of the. sec
tions. This endless chain conveyor may be of It‘willbe understood )from this construction that
the ‘elevator mechanism-shown in Figs. 20 and 21
standard construction, traveling over sprockets < will be provided at each end offthe apparatus,’
50 at‘ opposite, ends of the machine. The chain is
the. exit end-the slides will,be trans
provided at intervals with upwardly projecting and-lat
dogs 12 adapted to engage the ends of the slides. ferred from the level of the guideway to the
Each dog?l'iis pivoted at 18 to a channel bracket upper level of the gravity rolls .il?; and at ‘the "
end the slides F will be transferred from
14 ‘secured to a'link of the chain and is normally - entrance
the upper level to the lower level of‘ the guideway.
55 held in upright position by means of a‘spring 15.
The motor 88 for driving the return chain con
The chain at the front end of the machine travels
C.
is, controlled by a suitable switch 88a (Fig.
over a sprocket 1'8 journalled on a stud ‘I1, and _veyor
3) which‘has an operating part projecting into
‘ attached to the. hub vof the sprocket is a‘worm
gear 18 operated from-a worm. shaft. 18 (Figs. 1, '
60 i 3, 18 and 19). The “shaft ‘IS-at its inner end car
ries a sprocket 80 which is operated by a belt
I or chain 8l~ from the driveshaft 82' of an elec
tric motor '83
‘
65
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the path of the table 84 so that when the latter'is
loweredit will operate the switch and thereby
‘the motor 83 to start the conveyor. At the oppo
site end of the apparatusat the entrance of‘ the
tunnel there is also a' switch ‘(not shown)» which
isactuated by a slide when propelled onto the con
It] will be seen that the slides F‘ are returned‘ veypr rollsso as to start the'motor 88. ‘Another
in succession from the exit end of the table guide-, switch
(not shown) is preferablylocated within
way to the entrance end thereof for a succeeding
65
the tunnel adjacent the ?rst machine A which
'
The slides are transferred
' series of operations.
' is operated by a slide so as to stop the motor 88.
' - from the level “of the'conveyor ro'llerways 85 to
the level of the‘ table giiidewayv at the entrance
end H' (Figs. 1 and 3) by means of elevator mech~
A control'lever 9: may be provided (see Figs. 3
‘and 30) for starting and stopping the‘ hydraulic
punfp 84, and another lever "for starting and
anism similar to that previously described. Each stopping
the ram 89. _ These levers may be pro--\
I ,slide‘will be pushed by‘ a dog 12 of the conveyor
vided for emergencylpurposes, ‘and-‘similar ‘hand
back plate carrying guideways 85 cooperating control'levers may also beprovided ‘at the exit
75
for the samev purpose. '
with verticalguldes 86 carried by a column 81 end ofthe‘apparatus
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. chain onto
‘a table 84. This table has an upright
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Each of the machines particularly adapted for
use in the present. apparatus is of the automatic
.
has a portion I29a§wliich operates to-open the‘
valve through the roller I32 and lever I33, there
unit type which is started by the operator through by operating the ram in a forward direction.
a push button switch arid is fully automatic ,The cam also has‘ an operating surface‘ I23b
throughout one complete cycle of operation, the I which in cooperation with the roller I32 permits
5
a return spring I33 to reverse the valve and I
when the spindle or tools back away from the i shift the rain in a rearward direction. The cam
work to stop the-machine.H The machines may be also has a cam surface I231: which in coopera
located on the line by accurately positioning'the tion with the roller I32 causes a dwell and holds
drill or other tools in proper relation to the work‘ the ram inactive during a predetermined time.
10
vholder locating'pin of the table section. The ma- ‘
In the present apparatus, herein shown for the
chine usually has a bushing plate or guide mem
purpose of illustrating one embodiment of the
her for the drills so as to exactly center them invention‘, _the control mechanism for actuating
relative to the work, such as the member I I3 car
the various parts of the apparatus as well as the
machine having, a return limit switch operated
ried by the frame of the machine C, Fig. 7, or the
member H6 attached to the table section as
line of metal working machines in- proper timed
relation preferably operates as follows. Assum
shown in Fig. 5.
ing that the table 34 is in its upper position as .
It will be understood that’each slide has at
shown in Figs. 3 and 3A on a level with the ways
tached thereto a removable work holder which I 29 in table section E, Figs. 5 to 7 inclusive, and
will be of a kind adapted for the particuiarrwork. that table 34 carries a workholding slide mem
In the present case, by way of example, the work her‘ F/that has suitably mounted thereon a me- 20
.
holders J (Fig. 4) are‘designedfor holding auto
tallic work piece; also assuming that each of the
mobile cylinder blocks K (Figs. 5-7 inclusive).
table supports E, Figs. 1, 2, 3 and 4, are carry
In Figs. 1, and 22\-24..inclusive, I have illus ‘ing two of the work slides F that likewise have»
trated a unit L for automatically controlling the
metallic work pieces suitably mounted ‘thereon, 25
various operating mechanisms of the apparatus .it
will-.be seen that there will be a continuous
in timed relation. This unit comprises a base I20
line of work holder sliders-VF in succession from
and a suitable housing (not shown‘) to enclose '
entrance end H to exit end (3- of the main guide
the mechanism of the unit. A cam shaft I2I is . way 29 and also a, work holder slideon table 34.
carried in suitable hearings in upright iframe
members , I22, this shaft being driven through At this time it is assumed that table 53 is empty 30
gearing of a'reduction unit. I23 from the drive and in' its upper position as shown in Figs. 2
4 on a-level with guideway 29. Cam I21 _
shaft I24 of an electric motor I25. This motor and
thereupon operates to open valve N, whereby‘
is started or st pped by means of two push button ‘
switches forming part of a control box unit I25a. the hydraulic cylinder 31 and rackvram 33,
The cam shaft I2I carries a series of cams of , through connecting mechanisms, withdraw the 33
locating pins 43 and release the clamping mem
required number ‘for automatically! operating any bers
52- from the slides. ' Immediately following
or all of the mechanisms. In the present instance this in
predetermined timed relation the cam
the shaft carries six cams, I_23j',\I2'I, I23, I29, I30 I23 operates
to open valve 0, whereby the hy
and I3I. Each cam cooperates with a camroller
draulic
cylinders
and rams 33, 34 function to
I32 carried by an upright swinging lever I33 pive
oted at its lower'\end' at I34 and at its up r end shift the slides in the main guideway simulta
pivoted to a link I35 which in turnisconnected neously from one station to another, and the
to a rod I33 for operating a valve or switch, as i' hydraulic cylinder and ram 9|, 92 function to
the case may be, carried by a casing I31.‘ ‘The shift a work slide from the idle orloading sta
cams I26--I3310perate, throughe-the mechanism
tion, represented by table 34, onto the main
mounted on a table I33 bolted oh the supports
I22. At R ‘is shown‘ an electric switch suitably
the rams 34 shifts awork slide from the main
described, a series of ‘valves M, NfO, P and Q ' guideway 29, it being understood-“that. one of
guideway 29 to the idle or" unloading station
At this time cam I23
has suitably revolved to reverse valve 0, thereby so 7
retracting ram"92 into cylinder 9i and rams 34’
into ‘their respective cylinders 33. At the com:
connected to the control boxes of the motors 93, ' represented by table 53.
91, 93 and 99 for starting these motors, this
switch being actuated through the medium of the
cam “I and intermediate parts. Each of the
valves M‘-Q is'conneTcted in any well known
manner to the ‘particular-mechanism which each
pletion ofjthis retraction of \the rams cam -I23
has suitably revolved‘ to placevalve O in a dwell
position.
-
'
'
.
valve controls for the-purposeof starting and
~ ‘Simultaneously with the reversal of valve b
stopping ‘such mechanism. The ‘valve M op
erates the hydraulic cylinder ~andrarn‘33, 39.. The by cam I23; cam I'2‘I reverses valve N“ which in
valve N operates the hydraulic cylinders 31 for ' turn reverses the action of cylinder 3,1 and rack
controlling ‘thelocating pins ’or plungers 43' and 53 whereby the locating .pins are released for
the clamping members 32 for ‘the slides. The movement into their operative positions in slides 00
F and clamping members 32 are drawn into‘
valve 0,0perates all "ofxthe hydraulic cylinders clamping
positions. Immediately. followingfthe
andrams 33, 34 and; the ‘cylinder and ram 9i, 92,
for propelling’ the slides at the :upper conveyor ' foregoing operation cam I3I operates .to close
levels The valve P operates or controls the'h_y—_
thei'electric switch R, which in ‘turn releases ‘the '- '
draulic cylinder and ram 33, 84 at the exit end of ' various controkmechanisms on machines A13,
the apparatus. _ The'valve'Q controls the hyw C, .D, which in turn carry, out one complete op- "
draulic cylinder-and ram 33; 31, at the exit end
of the apparatus to fpropelthe slides successively
_
70 onto the conveyor rolls.
The f cams I23-I3I .are designed and -con-'
eration‘ cycle on the work. carried bythe work
slides located opposite the machines. -At the
completion of the work cycle, cam‘ "I has opened
switch R and machines A, B, C, D, have re
Istructed wiiiifelatipn‘to'one
another 'so‘as to op-'--.
v
turned to starting position and remain or dwell
in this position until again actuated,,in proper
illustrated, for ‘example, ‘in Fig‘. 2a. ?rms cam
eration cycle cam' _I23 has actuated valve M_ caus
erate the v es MT-Q and electric switch It in timed relation, by cam '13! and switch R. r
proper timed relatibn. One of the cams I23 is _. . ‘During the time of the foregoing machine op
f.
,,
p
-
w;
2,120,966
t
‘
5 '
chine, a series of separate work holders guided in
ing hydraulic cylinder and ram‘ 88, 89 to [lower
empty table 84 to the level of the’ returnconveyor
rollerways 85. The table 84 during its downward
travel actuates the swit h_83a which starts mo
tor 83 and conveyor chain '_|l, causing the lat
said guideway, longitudinally reciprocable mem
bers-engageable successively with certain of the
work holders beneath the same for shifting the
work holders in a line through the guideway, and 5
' ter to shift a work slide onto the empty table 84 ‘ means for locating each work holder opposite a
machine for an operation.
immediately after it has reached the level .of
the return conveyor.
>
-
3. An apparatus “for handling v‘metallic work
At this time cam I26 re
pieces for successive operations by a series of
verses valve M causing“ hydraulic cylinder and
10 ram 88, 89 to elevate table 84 ‘carrying, the work
metal working‘machines arranged in line, com- 10 '
slide to the level of guideway 29 in table E. prising two horizontal conveyors, one lying in a
Table 84 with its work slide dwells or remains vertical plane above the other; two vertical con
' at this elevation until'the proper time to repeat “ veyors, one located at the end of each horizon
' its cycle, and during this dwell the work slide tal conveyor; one of said horizontal conveyors -
comprising a supporting table provided with a 15
15 is loaded with another metallic work piece.
horizontal guideway and a series of work holding
During the aforesaid machine operation cycle,
slides adaptedto travel‘i'n the guideway; each
table 58 at the exit end of the line is also com
vertical conveyor comprising an elevator’, between
the ends of the horizontal conveyorsfor trans
pleting its cycle.‘ Immediately after receiving
a‘ ' a work slide F which was previously shifted from
ferring each slide from one horizontal conveyor 20
the exit end ofvguide‘way 2.9 onto table 58 by hy
_
'
to
the other without inverting the slide; and pow-I
draulic cylinder" and ram 3-3, 34, this slide .‘is re
lieved of vits metallic work piece which has pro ‘er operated means for operating allpf said con- ’
in timed relation.
~ _,
~
‘
ceeded through the ‘various machine operations veyors
4. In an apparatus for handling metallic work
.4 20
' in the.line. At this time cam I29 operates valve;
25 P whereby- hydraulic cylinder and ram '53, 84
'-pieces for successive. machining operations in 25
which a series of metalworking machines are '
lower table 58 with its work slide to-the level of
in line, the combination of a series of
the return‘ conveyor as shown in dotted lines in \ arranged
work
holders,
four independently operated con
Fig.‘ 4. Cam, I38 thereupon operates valve Q
veyors for moving said work hol ers successively.
which causes hydraulic cylinder and ram‘BB, 61
in a continuous cycle,'each con eyor having a 30
to push or shift work slide F onto the return roll
path of movement at right angles to thenext ad
ei‘Tways B5. Cam I30 then reverses valve Q which jacent
conveyor, one of said conveyors comprising , ,
retractsram 61 into cylinder 66._ ' At this [time ' a horizontal stationary guideway and a series of,
cam I29 ‘reverses valve P which. causes hydraulic slides movable in the guideway and each slide
cylinder and ram 63,v 84 to elevate empty table
carrying a work holder, and powerwperate'd/ 35
58 to the level of guideway 29 at the exit end of
the main guideway. Table 58 dwells or remains:
at this elevation until it has again received a
mechanism for operating each conveyor.
5. Work holding and conveying apparatus for
a series'of machines adapted for machining op
work slide F and then repeats its operating cy erations on metal parts, comprising a series of
cle in proper predetermined timed relation. Work work holders, means for-moving said work holders ' 40
slide F sholftly after being shifted from table 58 in succession from each machine to the next, a .
onto'roller guideways 65 is picked up by endless continuous guideway fori'rguid-ing the work hold
40
' chain"l I through the medium oi one of the dogs
ers in a predetermined path with respect'to said
12 and is conveyed to thelopposite end\ of con
machines, power actuated devices. for clamping
veyor where slide F, at a suitable ‘point’, engages the work holders at opposite sidesof the guide- 45 - I
45, and actuates, an electric switch (not shown) ' way opposite the machines for simultaneousm'a
which .causes motor 83 and conveyorchain ‘H tov chining operations and for vunclan'iping-the work
stop just before slide F‘reaches the exit endure > ‘holders after the completion of said operations,‘ _
the return conveyor. JSlide-Fremains at the end a separate conveyor for returning the work hold- -
. of’ and just withinthe' tunnel ,of ‘ the frame until
ers from the last operation to the ?rstloperation , 5o .1
50: table 84 during its, descent again actuates switch
and extending on a diiierent level- from said
‘guideway, means ‘for transferring the work hold‘
‘ 1.
_
ers from the lével of theguideway to the level 61' _
appara us for handling metallic work
said conveyor without changing the angular posi- - -
% piecesfor successive machiningoperation's, com
55
prisinga series ofv metal working machinesf ar
jranged‘in line, a supporting table having a top
horizontal guideway extending continuously from
_
tion of said work holders, and means for trans— . 55;
ferring the work holders 'fromthe level of said“ ' -
F
- conveyor-to the level
of‘ said guideway adjacent
‘
the ?rst operation;
-
'
‘
'
'
r
the ?rst machine to .the last-in said line, said table '
6. The, combination of a line of machines, a
comprising . independently jremovable sections ‘series of work holder-slides,‘ mechanism including 30 '
each
having
separate
?oor
supporting
means,
a
80
reciprocating devices beneath the slides- for in?’
series of work holding members having‘ portions, 'termittently shifting said slides in succession in
?tting‘said'guid?eway for predetermined travel on
predetermined path past said machines, 'méch- ',
‘said table, power operated means for shifting said " aanisni
for locating‘ andf releasably clamping, the members to station-them in succession opposite slides successively at operating stations opposite “65 i
1
said machines,<a' conveyor for returning said:
, m‘einbersi'rom the exit, end of the guideway to the
'- entrance end, and'mechanism for clamping said
work holdingmem‘bersin succession to said re
' movable'sectionsi
‘
.70=?> va 1m apparatusgfor handling metallic ‘work
pieces ' for successive _ vmachining
operations
the machines, mechanism for operating-‘said ma: _
chines; and power drivenfmeansgfon controlling
all of said mechanisms to e?ectwthewoperatibn ‘
thereof in- recurrent cycles.
7.11: an apparatus for'handli'ng metallic work 70
,piecestfor successive machining-operations, the‘ ‘i
- _' wherein'ja line of machines, arearranged to oper- - combination of a plurality of metal working ma- '
_ 5 . - ate'one after the other ‘on each vworkpiece, come- .
prising a frame having an open ended horizontal
chine vunits‘arranged/in line, meansrorming a"
continuous main guideway from the first machine"
guideway'extendi?g continuously past each ma- ,. to the last machine-a series of work holder slides ‘75
6'
.
‘a
I
a
a
\
(
2,120,900
adapted to travel in the guideway. means for
eating and clamping a' plurality of slides ,in' ?xed
positions at operating stations opposite the ma
chines, a support forming a loading station in
slides in siiccession on .theisuldeway, a?straight
line operating means for transferring the slides
in succession from the exit end of the main guide
way to one end of'the return-guideway, and
advance of'the ?rst machine and a support form- ' straight line'operating means ior transferring the 5
ing an unloading station beyond the last machine, slidesin succession from the. opposite end of the
said supports having guideways extending in con-' return guideway to the. starting end of the mainv
vtin'uation of said main guideway, it return con
veyor, and reciprocating devices for shifting the
The combination, with saline of'machines,
slides from said supports ’to the return conveyor of 12.
a ‘series of work holders, mechanism ‘for ni- 10
vanibvice versa.
termittently- shitting said work holders in a pre
8." In an apparatus ‘for handling metallic work
path past said machines and for in
pieces for successive machining‘operations, the determined
termittently clamping said workvholders in posi
guideway.
v
.
/
‘
-
combination of a plurality of metal working ma
tion at ?xed operating stations opposite the
15 chines arranged in line, means forming a con
machines during'operation of the machines on 15
tinuous main guideway from the ?rst machine to ' the work, mechanism for transferring said work
the'last machine, a series'of work ‘holder slides ‘ holders in succession from the last machine to the -
adapted to travel in the guideway, means for lo
?rst machine, mechanism forcontroiling the op
. eating and relcasably. clamping a plurality of said
eration of said machines, and power driven means
slides .in ?xed positions at operating stations op
posite the machines,a support in advance of the
?rst machine and a support beyond the last ma
for controlling all of said mechanisms'to é?ect 20
the operation thereof in recurrent cycles and‘ to
coordinate the_operations thereof in timed rela
chine, said supports having guideways adapted to
tion. ,- "
extend in continuation of said main guideway to
13. In an apparatus of the class described, the
form idle stations for said slides and being shift
combination with a plurality of automatic maable from said stations to the return conveyor , chines having separate electric power units, of
and vice versa, power driven mechanism carried ' a series 'of work holders; means for supporting
' by said guideway means for shifting said slides, said work holders for movement in ‘a predeter
power driven ‘means carried by said guideway , mined path past said machines, mechanism for
means for operating said locating and clam91118 ‘intermittently
shifting said work holders and
means, and means ‘for starting said machines.
-for maintaining theusame at?xed. operating sta9. In an apparatus for handling work pieces for ~ tions opposite the machines” during predetersuccessive operations at a series of stations op‘ mined periods of time,‘ and means for automati
posite aseries of machines arranged in succession, caliy
" starting and. stopping said power units
,the combination of means forming a continuous whereby‘ the machines will complete their cycles
suideway from the ?rst machine to the last 'ma
of operation on/ the workduring said periods of
chine, a series of ‘work holder slides adapted to
time.
travel in theguideway, means for locking-a plu- ' ‘
rality of slides'in ?xed'positions in the guideway
at operating stations opposite said machines, a
I
-
.
.
25
30
'
'
35 i
.
'14., An apparatus for handling metallic work
pieces for, successive machining operations where
in a line-oi. machines’ is arranged to operate one 40
support located in advance of the ?rst‘ machine
after the other on each work piece, comprising a‘
frame having an open ended horizontal guideway
extending?continuously' past each machine, said
and a support'located beyond the last machine.
each of said supports being releasably secured
in nxed position to said guideway means and
frame comprising a succession of tablesections
releasably secured together and provided vwith 45
spaced vertical side supports forming a horizon
mechanism beneath the guideway for intermit- ''
tal tunnel extending through‘the frame beneath
tentlyshi ting the slides in the guideway. ‘ .
'
the guideway, a series of' separate work, holders
'10. In
apparatus for handling work pieces ‘ guided in said guideway, power means-for shift-i
for successive operations at a series of stations; ing'th'e work holders in a line through the guide- 50
opposite a- series of machines arranged in sun; ‘ - wayfmeans for locating and clamping each work ‘m
46 adapted to form, a continuation of said auideway
to receive a'slide and forming idle stations, 'and
cession. the combination'of means forming a
opposite each "machine for
operation,
continuous guideway from the ?rst-machine to holder‘
a return conveyor extending horizonta ly through the last machine, a series of work_ holder slides said tunnel; ‘means for independently transferring ~>
adapted to ‘travel in the guideway, means for
work-holder from the exit end'of'the guidc- 55
,lo'cking‘aplurality of slides in ?xedpositions in _ each
way
to
the conveyor, and means for independ
,1 the.- guideway at operating stations opposite said 'ently ,transferring1each
work‘v holder from the .
machines, a support lofcatedin advance fpf the , conveyor to the entrance end of the guideway.
?rst machine and asupport located beyond the “15. In an apparatus for ‘handling metallic
last
each of said supports being remov
ably secured in ?xed position to the guideway work pieces‘ for successive machining operations, 60
means' and adapted to'form a continuation of .the‘ combination of means forming a continuous
said guldeway to receive a slide and‘ forming idle horisontai- guideway, a plurality of work-holding
stations,
for- intermittently shifting‘ slides slidable in succession in said guideway, a
plurality of metal working z'machines mounted
-the,slides in the guideway, and separate mecha
nismf shiftingaslidefromthe?rstnamedm in line along said guideway, said machines having “5
the suideinv and fury shitting a slide tools shiftable transversely of the guideway into
iromtheguidewayontothelastnamed support._
and~out of'po'sition to‘ periorm operations on a
11;"1heoomhinatiohofaseri'esoiworkholder
plurality of
of work pieces carried by said _
slides designeif'to carrytwork
‘adapted to
beopes-a'ted upon successivelrby alineofma
slides, mechanism for intermittently shifting said
in .said mildews! and including means for _7o_\
a single level main guideway~ extending . successively positioning'the slidesat ?xedop
(. pastsa'ld machines, a single levelretum'guide
crating stations ‘opposite the machines,_ rele'aswane plurality oireciprocating'devieesbeneath
‘(lithe
'
able mechanism for
posite sides of
slide‘ at op
at each operating 75
. 2,120,966
station, and power driven [means for actuating
' each of said mechanisms.
‘
straight line horizontal slideway, said’ means
- comprising a series of table sections releasably se
cured together end to end, ‘a plurality ofywork.
holding slides/slidable in succession ‘through said
'
r 16. In an apparatus for handling metallic-work
pieces for successive machining operations, the
combinationgof means forming a continuous hori
slideway, a plurality of metal working machines
mounted in line along said slideway and, mounted
todifferent table sections, said machines having
tools shlftable transversely of the slideway into
and out of position to perform operations on work
pieces carried by said slides, mechanism for in 10
termittently shifting said slides in said slideway
and including means for positioning the vslides at
zontal guideway, a plurality "of, work-holding
slides slidable in succession in said guideway, a
plurality of metal working machines mounted in
line along said guideway, said machines having
10 tools shittable transversely of the guideway nto
and out of position to perform operations'on a
plurality of sides of work pieces carried by said
?xed operating stations opposite the machines,
slides‘, mechanism including a succession of re: each of said machines including power mech
ciprocating members for intermittently propelling ‘- anism for automatically shifting its tool into and .15
said guideway and including
15 said ‘ slides through
out of operation with respect to the work, means
means for successively positioning the slides at for
clamping said slides to the table sections, and
?xed operating stations opposite the machines, means
for automatically operating said clamping
, releasable mechanism for clamping each slide at ] means-and for starting said machines at prede-'
of
said
guideway
at
each
operat
opposite sides
' termined times.
20 ing station, and power driven means ‘for actuat
ing each of said mechanisms.
21. In an apparatus for'handling work pieces
for successive machine operations, the combina
tion of a plurality of metal working machines,
.
17. In an apparatus of the classdescribed, in
combination, a series of table sections having
horizontal top portions
provided with guideways ‘ each machine comprising a tool or tools and sep
25 and releasably secured together in .line to form a
continuous straight line slideway, said table sec-
arate mechanism including an electric power 25
unit for shifting said tools toward and from the
work, means ‘forming a continuous main guide
way from the ?rst machine to the last‘ machine,
said machines being arranged at a plurality ofv
different sides of said guideway to cause the tools 30
thereof to operate on different sides of the work
pieces, a series of workholder slides adapted to
-
- tions including upright supports, a series of work
holding slide's having‘ means ?tting into said
' slideway, a plurality of automatic cycle metal
30 working machine units arranged: in line and
mounted to said table sections for operating on
the work on said slides from the top and opposite
travel in succession through the guideway, mech
lateral sides thereof, mechanism for intermit
anism for intermittently shifting said slides
te'ntly shifting said slides through the slideway, through
the-guideway into ?xed operating sta- 35
mechanism for clamping the slides at opposite tions opposite said machines, mechanism for
35 sides of the slideway at successive ?xed stations
starting said'electric motors, and power driven.
opposite the machines.
'
.
.
means timed to control said mechanisms for op- ‘ -
18. In an apparatus for handling metallic work
pieces-for successive machining operations, the
eration at different times.
' 22. In an~apparatus for handling metallic work 40
combination of means forming a continuous
40
pieces for successive machining operations, the‘
horizontal slideway’, said means comprising a
series of table ‘sections releasably 'secured to
gether'end to end, a plurality of work holding _‘
slides slidable in succession through said slide
combination of a series of table sections adapted
to be positioned end to end and having cooperat
ing means forming a continuous horizontal guide- '
way, a pluralityof workholder slides carried by 45
each table section and slidable in said guideway,
,a plurality .o’f metal working .vmachines secured to
way. a plurality of - metal working machines
45 mounted in line along said slidewayand releas
‘ably ‘mounted to different table sections, said
‘machines having tools‘ shiftable transversely of
certain of said table sections at opposite sides oi
’ the guideway, said machines having tools shitt- '
the slideway into and out of position‘ to perform able transverselyof the guideway into and out of
operations on work pieces carried by said'slides,
to perform operations on opposite sides
50 a plurality of vmechanisms cooperating siicces-y v‘position
work pieces carriedby said workh'older slides,
sively with di?ere'nt slides ‘for intermittently of
mechanism for intermittently shifting said slides
shifting said slides in. said slide?way, and means , in
said guideway to position the same at operatj
101‘ positioning the slides“ at ?xed ‘operating ;sta'
55 iilol'isoiiposite the machines. -
-
i 19. In an apparatus for handling metallic work
ing stations opposite the machines, mechanism for
clamping, opposite sides of each sllde‘tothe table
-
at each operating station, and power means for ~
'piecesior successive machining operations, the
actuating said "clamping mechanism and for re-,
leasing the same at ‘predetermined intervals‘ot
straight line horizontal slideway, said means com
0
prising a series of table sections releasably se-,'
23. In an apparatus of the class‘ described 6
,
a
plurality
of
workI.
.60 ‘cured together end to end,
r ,holding slides slidable in succession .through said wherein a plurality of metal working machines~
> combination of- means jorming a continuous
time.
'
,
-
-
"
slideway. a plurality 0t metal working machines ' are arranged in line for ‘successive operation on
mounted in line along said slideway and releas .‘work pieces, a-table comprising a series of table
sections provided with guideways positioned in '85
- ably mounted to different tablejsectionasaid ma
‘35 .chines having tools shlftable transversely vvo! the alinement to 'iorm a continuous straight“ line
slideway, a series of work holding slides ?tting ‘
”slideway into and out of position torpertorm op
' ' -' erations simultaneously-one plurality oi‘ sides of said slideway for successive travel therethrough,
work pieces carried by said slides, mechanism for
some or‘ all of said table sections being releasably
secured together in line and removable'independ- 70
ently of one another and also having successive
' intermittently. shifting said ,slidesin said slide
70- way and including'me‘ans i'or positioning the
> slides at ?xed operation stations opposite the ma.
.chin'es.
f'v'
[stations for supporting at one time a plurality of
‘
'20.,In an "apparatus for handling metallic
' ' work pieces __for successive * machining . operations, I . -
75 the'combinatlon of means torming- a continuous
slides, means carried by said table beneath ‘the ’
slides for intermittently. shifting said ‘slides '
throughthe' slideway? and nieans for intermit- 76
8
~
g
-
’
I
chooses _ ~_
tently positioning and also fixing successive slides
erating stations opposite the machines, and power
driven means for actuating each of said mech
_ _ opposite. said machines.
24. In an apparatus of the class described, the
combination or a plurality of metal working ma
chine units, a table comprising a series oi’ inter
_ 28. In an apparatus of the class described, the
'» combination with a plurality of automatic ma- .
changeable table sections provided‘ with guide
chines, each machine comprising a tool or tools
I " ways positioned in alinement to form a continu
10
and separate mechanism including an electric
ous straight line s'lideway, a series of work-hold;
ing slides ?tting said slideway for successive
power unit-for shitting said tool or tools toward
travel therethrough.\means i'or intermittently and from the work, work carrying means for sup
shifting said slides through 'the slideway mt?» ?xed porting a series of work pieces in predetermined
spaced relationjand operable to shift said work
pieces in succession ina straight line path rela
tively-to‘ said machines, said machines being ar-.
ranged whereby the tools thereof will operate on
15 or. said slideway. '
a plurality oi’ sides‘ of the work pieces, mech- _
25. In an apparatus for handling metallic work, '_ anism cooperable with said'work
carryingmeans
pieces for successive machining operations, the for intermittently and,
simultaneously
shitting .
combination of a series of table section's adapted said work pieces irom-one series of operating
stav.
to be positionedlend to end and~having cooperat
tions to another series of operating stations oppo
ing means forming a continuous horizontal-guide
said machines, means ior maintaining said
way, a plurality of work holde?slides carried by site
work pieces at said stations during predetermined
each table section and siidable in said guideway, periods
of time independently of saidmechanism ,
a plurality of metal working machines secured to and means
for starting and stopping said power
operating stations, and means for interchange
ably mounting said inachine units to di?erent ta
ble sections'tor operation at a plurality-oi sides“
certain of said table sections ‘at ‘opposite sides of
_ units whereby said tools will complete their cycles
of operation on
pieces during “said pe
able transversely of the guideway into and out of riodaof time. ‘the work'
>
position to perform operations on opposite sides.
the guideway, vsaid machines having tools shift
of work pieces carried by said work holder slides,
mechanism for intermittently shitting said slides
, 29. In an apparatus ‘of the class described, the
combination with a plurality of automatic ma
chines
te electric power units, of a
in said guideway to position the same at operat ,‘series
of work", holders supported for travel in
7 a
stations opposite the machines, and mecha
nism for. clamping opposite sides of each slide to ‘straight-line path past said machines. mechanism '
the table at each operation station.
'
' ‘intermittently cooperable with said work holders "
' ing
d for intermittentlyand simultaneously
,
shifting the '
'26. In an apparatus or th class escribed.
'samein
said
path
relative
‘to
said
machines and
q
wherein a plurality of metal isrking- machines
means ior positioning said work hold
.are arranged in line for successive operation‘ on including
ers at ?xed operating stations opposite the may 35
,work pieces, a table comprising aseries oi‘ table
sections. provided with guldeways positioned in
alinement to form a continuous straight line slide
~' way, a series of work‘
-
holding slides ?tting said
slideway for successive travel thercthrough, some
or all of said table sections being releasably 'se-'
cured together ‘in line and removable independ-'
ently or one ‘another and also having successive
stations for supporting at one time a plurality of
slidersv ‘and means carried by said table; beneathv
the'slides i'or intermittently shifting‘ said slides
through the slideway.
_
,
-
chines during predetermined periods of time,‘ and
means for automatically s
and stopping
said power units whereby the machines will com-1 -
plete their cycles oi'operation on the, work dur
ing
,30.,In
said periods
an apparatus
of time.for handling
. " v work pieces
- for successive machine operations, the combina
tion ~01 a‘ plurality of metal working machines, I
each machine comprising a tool or tools andsep- 4
arate mechanism including an electric power unit
.i’or shitting said tools toward and from the work,
27. In an apparatus Lfor handling metallic work - a series oi’ work carrying members supported for
‘
55
travel in a predetermined straight-line path past'
pieces ior successive machiningoperations,‘ the“ ‘said
machines, said machines
arranged to
combination oi! means forming a continuous hori-' "cause
_
beig
the tools“ thereof toI opera
zontal guideway, a plurality of work holding-slides '
on di?erent
sides; of the work pieces, mechanism cooperable
slidable in succession in said guideway, a plu
said work'carrying members for‘v intermit
ralityoi ‘metal working machines mounted in line with
tently and simultaneously shifting the same into
along said guideway, said machines having tools
iixed operatingstations opposite the'machines and '
shii'table' transversely oi’ the guideway into'and '
out oi position to perform operations on a plurali
for maintaining them at said stations during pre
' determined periods of time
and means for auto_ ty ohsides 015 work pieces carried-:by said vslides, 'niatically
~starting and stopping said powerunlts
echanismincluding a succession oireciprocating' " whereby the
machines will complete their cycles
_members>i'or intermittently propellingsaid slides of operationon
_
the work pieces during said pe
through saidguide'way and, including means for
at‘ ?xed 0P
rlods otltime.
60
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