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Патент USA US2132861

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Oct. 11, 1938.
2,132,861
H. J.’ PERAZZOLI
MECHANISM FOR CLAMPING MOBILE UNITS TO RAILS
Filed March 21, 1936
$911.‘
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25
INVENTOR
BY
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?r
ATTORNEYS
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Patented Och-11, 1938
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2,132,861‘
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‘ U~1Te1m1rs~ newOFFICE
‘' MECHANISM FOR; CLAIWPINGv MOBILE UNITS '
a.
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.TO‘RAILS,"
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Hairy‘ J, reams, Philadelphia, ‘Pa...
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Application Mai-ch21‘, 1936, Serial No. ‘770,017
8 Claims.. (Cl. 51-178)
-' This
invention
relates to
mechanism
for
ator'standin'g at an end of the machine, the in;
clamping mobile units to the rails ofsa tr‘ackway.
The invention is especially concerned‘with the
provision of a'novel clamping mechanism par
vention further‘ makes provision whereby the
operator positioned as aforesaid may conveniently
actuate the clamping mechanism. In other
.5. ticularly adapted for application to a mobilelunit ' words, an operator positioned at an end of the
carrying ‘means for operating on a rail, such for
machine in position to take care of other controls
example as a;track grinder,
One ofthe primary objects of the invention .is
the provision of a simple; effective and readily
on the machine or to maintain the machine in
an upright position may, with the improved
clampingmechanism, actuate the clamp without
actuated and released clamping mechanism for
leaving his-post. To furtherfacilitate complete
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mobile units of the type abovereferred to. 7
controlv of the machine by such an operator, the
'
I Another object of the invention is involved in
the provision of means whereby the 1clamping
inventionr‘provides an operating element for the
clamp which? is located"for'convenient actuation
mechanism may readily begactuated to clamping , by the foot of the operator, thus leaving his hands
15
position and, upon releaseo'f‘ the operating mem
ber, will automatically become disengaged from
the rail. This object and the object stated just.
free to manipulate other‘controls’or aid in sup
porting the machinevin its proper operative posi
above , are both of importance in facilitating
How the ioregoing objects and advantages are
attained, togetherwith others which will occur
movement of the mobile unit from place to place’
tion.
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2 O along the rails, so‘that a minimum of time is lost
to those skilled in the art,fwi1l’be more apparent
duringsuch movement. This, of .course,_is .of
especial importance where the tra?ic carried by
from 'a consideration of the following description
the ,trackway is heavy, i. e.,‘where trains or cars
pass at?frequent intervals. In such ,event, the
25 machine, for operating on. the rails -must, of.
course, be removed, and the quick action clamp
ing mechanism of this invention is of importance
in reducing the time necessary to unclamp, re
move the machine and, after passage of a train,
30 return the machine'to the rail 'andIe-clamp... '
Still further. the inventionhas in view. arrange
20
making reference to the accompanying drawing,
in 'whichl—"
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Figure 1,is_a side view of a portion of an end
of va vgrinding machine adapted to vride on a rail, 25.
to which‘machine the clamping mechanism‘ of
this invention has been applied, various parts
being‘shown in vertical section to illustrate the
arrangement;
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a
'_ Figure ,2'is an‘end elevational view on an en
30v
larged scaleof the machine taken from the right
ing the several parts of theclamping mechanism; ' of Figure >1,Vthis view also showing'the clamping
in such manner that they may be ‘raised substan
mechanism in elevation; and
tially clear of the 'railfonwhichthe mobile unit
is adapted to ride, whereby the unit may be
readily shifted or moved along the rails, rover
stantially as indicated by the section line ,3—3' 35
switches,
etc.
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Still other objects and advantages of the-inven
tion will be apparent from a consideration} of
40:
the nature of the equipment with which the
‘ Figu're'3 is a vertical sectional view-taken sub
on Figure 1.
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- Various“ features of the grinding machine illus
trated form no part of the presentinvention per
se, these being described and claimed in my co
clamping mechanism is particularlycadaptedfor.
pending application Serial'No. 46,992, ?led Octo 40
ber.28, 1935 now ,Patent No.’ 2,114,454, issued
use. In a rail grinding machine, Iforlexample of.
the caterpillar type having a series of’ bricks or
April 19, 1938. Some of the structure of a ma-,
equivalent abrasivemeans adapted. to move-‘on
45: the surface of the rail longitudinally thereof,‘the.
grinding action exerts a very powerful driving
force, tending to carry the machine along. the
rail ,or rails. ‘,With this in mind, the invention
provides a clamp which; whilehaving, the desir
drawing in order to bring out the, cooperative
relationship existing between those parts and
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chine oi this type is, however, illustrated in the
the improvedclamping mechanism.
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_. The machine incorporatesianendless series of
bricks 4 of abrasive or like material, carried by
a chain, or the like _5 which is adapted to ride on
able quick actiongatc the same time exerts a very‘ sprockets orv equivalent supports in an oval path, 50
substantial clamping force: in'order to resist the
driving tendency of the grinding operation. , ' " '
In addition to the above,_in"certain' machines
which are adapted to be positioned and operated
5.5.'- more or less ‘manually-‘for example by ‘an oper
one run of which .overlies the rail. R in position
to grind’ the surface thereof. This grinding por_
tion of the machine proper is supported on fram
mg 6_ which is movable verticallyv with‘ respect to
an additional‘ frameincorporatlng longitudinal
farm
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2,132,861
and thus raise the clamping mechanism clear of
I ,members 1 and uprights 8. Each upright car
the rails (see Figure 3).
ries a roller or wheel 9 adapted to ride on the
In considering the operation of the mecha
rail, as clearly seen in Figures 1 and 3. The
framing 6 incorporates slide or guide members
It] having guide ?anges vI l_-l l adapted to em
brace the upright’ 8 and thus provide for rela
tive vertical sliding movement of the two frames.
nism it is ?rst pointed out that in Figures 1 and
2 theystructure is' shown in clamping position, 5
i. e., in engagement with the rail, while in Fig
ure 3 the mechanism is shown in released posi
tion and also raised about the pivot 22 away
Each‘ upright 8 is further provided with a
vertically elongated slot l2 through which an ear
10 l3projects, this ear being carried by member
from the rail.
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When, the machine is brought to a point of use
and positioned on the rail, the operator'stand
[0 (see Figure 1). Vertical adjustment of fram
ing 6 and thus of vthe grinding unit itself may . ing at the right in Figure 1 may conveniently
be effected by means of a shaft I4 threaded in ‘
1'0.
effect clamping byidepressing‘ the foot pedal 34.
This ‘action, as above stated, spreads the upper
a nut or collar l5 which isi?Xed' as. against rota
'15 tion in the ear l3; Rotation of shaft l4 may, ' ends of the jaws and forces the bolts 21 (see Fig 15
.be e?ected by 'a ‘worm wheel l6 which in turn
may conveniently be actuated by a Worm (not
shown) mounted on shaft l'lfwhichlatteris 'Op- 1‘
erated by hand wheel l8. It will be understood
20 that a mechanism similar to that just described
is positionedtoward each end of the machine
so thatthe two ends of the framing 6 are carried
up and down in unison in accordance with the
adjustment of the hand wheel 18,. A spring ‘I9
25 reacting between the ear l3 and an abutment
20 serves to permit upward displacement of the
framing 6, and the grinding unit, as when en
countering an irregularity in the rail or the like.
clamping mechanism to this unit‘, I prefer to em
ploy structure as. ‘follows.
35
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along, the rail.
While maintaining the clamp
‘in its clamping position as just described, the 20
operator’ may conveniently-employ-his hands to
keep the machine in its proper operative posi
tion, as bygrasping the handle H or, if desired,
he may manipulate the wheel I8 for the purpose
of adjusting the height of thegrinding unit prop 25
er. When it is desired to move the machine to
a new spot along the rail; the operator merely
releases the foot-pedal enough to‘ disengage the
clamping bolts 21. The-machine
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may then be
rolled on its rollers 9; to the new location and 30
the foot pedal again actuated toaeifect clamp
Whilevthe clamping mechanism of the pres
ent invention may be applied to a wide ‘variety of
mobile units, it is peculiarly adapted to a unit in
i the general class ,described.
In‘ applying the
The
grinding may now take place and the machine
.will be rigidly maintained in the desired location
ure 2) ‘ against the side faces of the rail.
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ing'to'the' rail.
When ‘it is desired to move
the machine from place to place by travel along
the rail, the operator’sfoot may be completely
V
A pair of arms 2| are pivotally mounted co
axially with the wheel 9 by means of vthe wheel
shaft 22. These arms project away from the end
of the machine and support a base plate 23
' adapted to rest on the top surface of the rail and
removed from the pedal 34 'and- in this event
the spring 31 serves to raise the lever 30 until’
this lever abuts the upper part of the guide 35.
This in turn causes the entire clamping mech
anism to pivot upwardly about the pivot 22 (the
axle for the wheel or, roller). As seen in Figure
46 alsoa-pair ofv ?anges_24--24. The ?anges'in 3,
this ,upward movement is sufficient to bring
turn serve to support the‘ clamping jaws 25—25
which are pivoted 'theretoby pins 7.26. The the lower ‘ends of the jaws 21 entirely clear; of
lower ends of the jaws preferably carry adjust-r the upper side of the rail R. By virtue of this
able‘ pointed bolts 21 which, upon movement of r upwardldisplacement the machine may now be
the lower endsof the jaws toward each, other,
engage the side faces of the rail to effect the
clamping. The upper ends of the jaws 25 are
curved inwardly and provided with angled end
_ surfaces 28 which, in release position (seeFigure
3) abut against each other at one corner to limit
‘the movement in thereleasing direction and
which furthercooperate with a ,Wedge'part '29
formed on the operating‘lever 39.
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-' The operating leveris preferably carried more
v55 or less directly from the, upright 8 as by‘ a brack
_et 3! having a pair of apertured ears 32 to which
the lever is pivoted by a pin 33., Upon depression
of the foot pedal 34 carried by the'outer end of
the operating lever, the wedge part 29 is driven
60 down‘ in ' between the angled surfaces "28—28
and in consequence the upper ends of the jaws
are spread and the lower ends'thereof brought
together to clamp the rail. A guide device 35
projects upwardly from the base and is provided
65 with a slot through which the operating lever
passes, this guide device serving'to limit move
mentfof the operatingv lever in addition to- its.
guiding'functionf
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As best seenin Figure ,3, a spring, 36 isprovid
70 ed fOrdr‘awing ‘the upper'ends of. the jaws 25
toward each other and‘ thus releasing» the ‘clamp.
An additional spring-'31 serves toraise the op
erating lever‘ 34 and also tovvpivot the entire
transported from'place to place along the rail 45
clamping mechanism on switch parts, crossings,
without danger of fouling of. any part of the
or the like.
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7 From the vforegoing it will be seen- that the in
vention providesnot only an effective and pow
erful wedging or clamping action, ‘but further 50
incorporates these desirable features in a_ de
vicewhich at, the same timehasquick action,
so that minimum time lossiis necessary in'mov
ing the equipment from place to place or in re
movingithe equipment entirely fromithe rail so 55
as to permit the passage of a train or, any other
railway
vehicle.
,‘IclaimL,
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1. Illa.’ machine for operating on arail ofa 60
trackway, a supporting,wheellmounted on the
machine and adapted to rideonthe. rail, a mech
anismvfor clamping thema'chine to ‘the rail in
cluding a, framepivotally mounted coaxially with
said wheel“ for, movement. upwardly and down
wardly with respect to'the rail, a pair of clamp
ing jaws carriedeby, the frame at least one of
whichis movable toward and away from the rail
with the frame in alower pivotalposition of the
frame, and imeansrfor effecting relative-move
ment- of the jaws to provide for clamping and
release
of the
rail.
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,2.‘ In‘ a machine for operating on a'rail of a
trackway,'a supporting wheel" mounted on the
75' clamping mechanismw about the‘ wheel axis 22 1 machine and adapted to ride "on the rail,‘ a mech
2,132,861
anism for clamping the machine to the rail in
cluding a pivotally mounted frame, a pair of
clamping jaws carried by the frame at least one
Cl
of which is movable toward and away'from the
rail with the frame in a lower pivotal position,
means for effecting relative movement of the
jaws to provide for clamping and release of the
rail, and means urging said frame and the jaws
carried thereby to an upper pivotal position upon
release of the operating means for the jaws.
3. In a machine for operating on a rail of a
trackway, a supporting wheel mounted on the
machine and adapted to ride on the rail, a mech
anism for clamping the machine to the rail in
.~ cluding a frame pivotally mounted for movement '
upwardly and downwardly with respect to the
rail, a pair of clamping jaws carried by the frame
at least one of which is movable toward and away
from the rail with the frame in a lower pivotal
position, and a base plate adapted to engage the
rail in a lower pivotal position of the frame to
support the clamping mechanism on the rail
during actuation of the jaws.
4. In a machine for operating on a rail of a
trackway, a supporting wheel mounted on the
machine and adapted to ride on‘the rail, a mech
anism for clamping the machine to the rail in
cluding a frame pivotally mounted for move
ment toward and away from the rail, said frame
30 having a partadapted to rest on a rail in a lower
pivotal position and being adapted to be raised
to an upper pivotal positionaway from the-rail,
a pair of clamping jaws carried by the frame,
means for effecting relative movement of the
clamping jaws toward and away from the .rail
including an operating element adapted to effect
clamping of the rail upon downward movement
thereof and to release the jaws upon upward
movement thereof, a spring reacting between
40 a part of the machine and said operating ele
ment for raising the element to release the jaws,
and interengaging means on the frame and said
element for raising the former when the latter
is raised by said spring.
45
5. In a machine for operating on a rail of. a
trackway, means for supporting the machine on
the rail, mechanism for clamping the rail to
3
6. In a machine for operating on a rail of a
trackway, a supporting wheel mounted on the
machine and adapted to ride on the rail, a mech
anism for clamping the machine to the rail in
cluding a frame mounted for downward and up—
ward pivotal movement into and out of operative
position with respect to the rail in which latter
position the clamping mechanism is clear of the
top of. the rail, said frame having a part adapted _
to rest on the rail in the lower or operative piv 10
otal position, a pair of clamping jaws carried by
the frame, and means for effecting relative move
ment of the clamping jaws toward and away
from the rail including an operating element
adapted to effect clamping of the rail upon down 15
ward movement thereof and to release the jaws
upon upward movement thereof.
‘7. In a machine for operating on a rail of a
trackway, a supporting wheel mounted on the
machine and adapted to ride on the rail, a mech
20
anism for clamping‘ the machine to the rail in
cluding a frame mounted for downward and up
ward pivotal movement into and out of operative
position with respect to the rail in which latter
position the clamping mechanism is clear of. the 26
top of the rail, said frame having a part adapted
to rest on the rail in the lower or operative
pivotal position, a pair of clamping jaws carried
by the frame, means for effecting relative move
ment of the clamping jaws toward and away 30
from the rail including an operating element
adapted to effect clamping of the rail upon down
ward movement thereof and to release the jaws
upon upward movement thereof, and means nor
mally urging the operating element to an upper 35
. position.
8. In a machine for operating on a rail of a
trackway, means for supporting and positioning
the machine on the rail, a rail working tool car
ried by the machine, a mechanism for clamping 40
the machine to a rail of. the trackway, said mech- V
anism including clamping jaws relatively mova
ble to clamp the rail, the mechanism being mova
ble generally upwardly and downwardly between
a lower operative position in which the clamping 45
jaws may, engage the rail and an upper inopera
tive position in which the clamping jaws are
clear of the top of the rail, and an actuating
being mounted for downward and upward pivotal 'device ‘for said mechanism including a single
movement, means for operating the clamping operating element providing upon actuation
50
mechanism including an operating element posi
thereof for sequential movement of the clamp
tioned relatively low for foot actuation by an ing mechanism into operative position and then
operator, and means normally moving the entire clamping of the rail by the jaws.
secure the machine thereto, said mechanism
clamping mechanism including the operating ele
ment to a position above the rail when the oper
ating element is released.
HENRY J. PERAZZOLI.
65
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