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Патент USA US3066923

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Dec. ‘4, 1962
Filed Nov. 23, 1959
6 Sheets-Sheet 1
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ALBERT E. Lasso/v
% 1/65”
United States Patent Oli?ce
Albert E. Lesson, NGXOHI, Mont.
Filed Nov. 23, 1959, Ser. No. 854,854}
5 Claims. (Cl. 254-125)
This invention relates to a novel mobile rail spike
ii’atenfred Dee. Al, 199162
alternate positions two speeds forward, neutral or reverse.
Connecting transmission 21 and the ?nal pulley 23 is a
shaft 24. Pulley 23 drives a wide be.t 25 which ex
tends through bed 10 to a similar pulley 26 mounted on
the axle for the front driving wheels ill. An idler pulley
27 is mounted above belt 25 and is pivotally supported
upon bed 10 by depending struts 2d. The pulley 27
maintains a constant tension in belt 25 due: to its weight.
Belt 16 drives a pulley 29 which is ?xed to the input
riage equipped with spike engaging shoes which are jerked 10 shaft 3% of an air compressor 31 mounted upon bed It}.
The disclosed machine consists of a rail traveling car
The outlet air connection comprises a pipe 32 which feeds
upwardly by air pressure responsive to either manual or
to a reservoir 33 that stands vertically at the front of
automatic control. It utilizes the existing rails as guides
bed 10 and a connecting hollow air-tight front beam
and slides the shoes along the base of the track under
33a. The reservoir 33 has mounted at its top a control
the head of the spike. Therefore the shoes are automati
panel 34 which is equipped with a pressure gauge 35 and
cally positioned as the carriage travels along the track.
four control buttons 36-39 whose functions will be fully
It is an object of this invention to provide an automatic
explained later. Reservoir 33 is equipped with a pres
control for a spike puller activated in response to pres
sure relief valve 40 which maintains a predetermined
sure caused by engagement of the puller and spike.
maximum pressure in the reservoir 33 and beam 33a.
It is a further object of this invention to provide a spike
The spike pulling mechanism is mounted at the forward
puller which has a sudden jarring motion to remove the 20
end of bed 10 and is best shown in the sectional views of
spikes from the ties.
FIGURES 8 and 9.
These and further objects will become evident from the
The spike pulling assemblies are mounted in pairs
following disclosure and the accompanying drawings
which straddle each rail 76. The mounting ?xtures at
which illustrate one speci?c form of my invention. It is
each side of bed iii are identical and comprise a ?rst
to be emphasized that this speci?c arrangement is not
bearing mount 42 ?xed to the side of bed 10 and a second
exhaustive of the possible applications of this invention
and is not meant to limit the scope of his invention except
as de?ned in the claims.
In the drawings:
FIGURE 1 is a sectional view through a rail showing
the rail and tie plate with one spike previously removed
for clarity and with the shanks of the spike pulling shoes
broken away;
bearing mount 43 ?xed to the front surface. of beam 33a.
These bearing mounts 42, 4-3 rotatably carry a tubular
shaft 44 which is provided with a plurality of holes 45.
Each shaft 44 carries two spike pulling assemblies 46,
47 which are identical in construction. One of the spike
pulling assemblies 46 will now be speci?cally described.
‘The spike pulling assembly 46 is journalled upon shaft
44 by means of a tubular stub shaft 48 which extends
is a sectional view taken along line 2-2
35 through a channel backing member 49. Member 4‘)? ex—
with the rail and tie broken away;
tends downwardly and is adjacent to the front of beam
is a sectional view taken along line 3+3
33a in its operative position. Member 49 and the abut
with the rail and tie broken away;
ting surface of beam 33a constitute means to restrain the
FIGURE 4 is a front-view of the carriage assembly with
spike pulling assembly 46 against rearward motion of
portions removed or broken away for clarity and with the
its lower portion relative to the bed it). Welded to the
rails shown in section;
central portion of member 49 is an enclosure 51} which
FIGURE 5 is an enlarged partial sectional view taken
extends upwardly from the top of member 49 as a rec
along line 5-—5 in FIGURE 4;
tangular channel. Openings 51 are provided at the lower
FIGURE 6 is a top plan view of the complete assem
portion of enclosure St) for maintenance purposes. A
bly with the rails broken away;
45 pneumatic cylinder 52 is ?xed to the front lower portion
FIGURE 7 is a side view of the assembly substantially
of enclosure 5t; and is positioned parallel to both en
corresponding to FIGURE 6 with the spike pulling assem
closure Si’) and member 49. A guard 53 is ?xed to en
bly in retracted position;
closure Sii at its upper portion and comprises a square
FIGURE 8 is an enlarged sectional view taken along
cross-sectioned protective cover for the enclosed moving
line 3 8 in FIGURE 7;
FIGURE 9 is an enlarged sectional view taken along
Slidably mounted within enclosure ‘Si? is a hammer 5-1
line 9——9 in FIGURE 4;
which is rectangular in cross-section, has a slot 55 cut
FIGURE 10 is a schematic wiring diagram and pneu
out of its lower end and has a perpendicular lug 56 at
matic control circuit for the spike puller; and
FIGURE 11 is a fragmentary sectional view taken 55 its upper end which protrudes through a slot 67 cut in
the front wall of enclosure 50. A bolt hole 57 ex
along line 11-41 in FIGURE 6 showing one guide as
Referring now to the drawings, and to FIGURES 6
and 7 in particular, the spike puller is shown on a mobile
mounting consisting of a ?at bed 18> mounted upon front
tends through hammer 54 at its lower portion through
slot 55. The pneumatic cylinder 52 is air-tight and has
an inlet at 58 connected to a ?exible air hose 59 which
is connected to the control box 66 mounted on bed It}.
and rear railway wheels 11 and 12 respectively. Since
the structure of such assemblies is quite common, no
further speci?c details are deemed necessary. Power is
supplied by an engine 13 mounted on bed It), which
A piston 61 in cylinder 52 is mounted for upward move
or any other type desired. Engine 13 drives a double
pulley 14 upon which are mounted two belts l5 and 16.
Belt 1'5 in turn drives a pulley 17 connected to the input
shaft 18 of a step-down transmission 19 of common con
spaced so as to receive the lug 56 on hammer 54-. Lug
56 and yoke 64 are maintained in engagement while
ment and carries an upwardly extending rod 62 which ex
tends through a sealed opening 63 in cylinder 52 and
protrudes into guard 53. The upper end of rod 62 has
might be an internal combustion engine, diesel engine 65 formed thereon a yoke 64 having legs as which are
The output shaft 20 of transmission 19 is
connected to a ‘control transmission 21 which has a handle
22 and is manually operable to be set in any of four
sliding along the con?ning walls of guard 53.
A spike pulling shoe 69 having a shank 68 is con
nected to hammer 54 by means of a bolt 75 inserted in
holes 57 and an elongated slot 7 6 in shank 68. The slot 7 6
provides a lost motion connection to hammer 54. Shank
63 is of the same thickness as hammer 54 and has a width
The control unit comprises a cylinder res having
three openings 1111, 162, 193 therein. Gpening 151 opens
slightly less than slot 56 to provide a smooth fit for
interchanging shoes 69. Shank 63 normally rests upon
the central portion of member 4-9 and extends beyond
the bottom of member 49.
Shank 6S terminates in a
spike engaging claw 713‘ which shall now be speci?cally
to an exhaust region maintained at atmospheric pres
sure. Gpening 1122 is connected by line 104 to reservoir
33, 33a. Opening 183 is connected to the ?exible air
hose 59, previously described, which runs to the con
trolled spike pulling assembly.
A piston 165 is inserted within cylinder ‘10% and has
Shown in FIGURES l-3 are two claws 711, one being
an air~tight sliding relationship within the inner cylinder
right hand and the other left hand in orientation. Since
the claws 75;- are mirror images, details of one should 10 walls. The vertical thickness of piston 1115 slightly ex
ceeds the diameter of openings 11114113. A piston red
be su?icient to describe both. They are shown in normal
1116 rigidly attached to piston 105 extends to a solenoid
riding position as one claw 71} engages a spike 71 having
1196:: which is operative to move the piston between the
a head 72 and a shank 73. The shank 73 extends through
position shown in full lines in FIGURE 10 and the
a hole 74 cut into the tie plate 82 and thereby engages
dashed line position. The ?rst position is the normal
the tie 75. A rail 76 is shown comprising a ?ange 77,
rest position and is maintained by the biasing force of
a web 78 and a bead 75?. Head 72 of spike 71 has an
spring 1117. The piston 1195 blocks opening 1192 and al
extension 819 which engages ?ange 77 to hold it down.
lows the line 5? to exhaust through opening 191. The
Due to the angular shape of ?ange 77, the outer ?ange
second position is the operating position and is obtained
81 of head 72 is located considerably above the tie plate
by activating solenoid 1%. In this position, exhaust
82. head 72; is completed by a top ?ange 83 which has
opening 1111 is blocked, and line 59 is connected to res
clearance between its lower surface and the tie plate 82
ervoir 53.
along both side edges and the inner edge of the spike 71.
A control switch 111% is shown in FIGURE 9 mounted
Claw 751 is mounted perpendicularly to shank 6d at
upon the front of bed 11) adjacent the supporting mem
the end of shank
opposite to slot 76. It is preferably
ber 49. A telescoping spring enclosure comprising inner
made of hardened steel and is integral with shank 68.
‘member 109 and outer member 111} houses a compres
Claw "it; is of general rectangular shape and has a lower
sion spring 111 and a rod 112 ?xed to members 49 for
flat surface 34 which extends halfway across its lower
movement with it. Switch 1118 is a pressure responsive
portion from its outside edge with respect to rail 76. The
switch having a control element 113 which is spring
lower portion then inclines upwardly as a surface 85
biased to a normally open position. The rod 112 is
which has the contour of the sloping ?ange 77. Flange
77 is thereby engaged by the surface 85 to vertically
position claw 7d.
The front edge of claw 71} has an
opening as therein which has a general rectangular top
positioned so as to contact element 113 when member
49 moves backwards due to the contacting of a spike
shank. This results in the closing of switch 108. One
terminal of switch 1118 is connected to ground at 114.
con?guration as shown in FIGURE 2. Opening 86 com
prises a series of vertical steps which extend along the
The remaining terminal is connected to one terminal of
three sided opening 36. The ?rst of these steps going
solenoid 106 by wire 115. The second terminal of sole
from the top of claw 719, is of a width considerably greater
noid 106 is connected to a battery 116, which is grounded
than the outer extremities of ?anges 81 and 83 and is
at 116a.
Step 37 terminates in a ledge 88 of
To allow manual operation a control switch 117 is
equal width on the outer and side portions, but having
mounted on control panel 34» and is controlled by the
?rst button 36 previously described. Switch 117 is also
designated as 87.
a narrow inner portion with respect to rail 76.
epth of step S7 is su?icient to place ledge 88 a short dis
tance above the lower surfaces of ?anges 81 and 83 of
spike 71. Ledge S58 is seen to approximately surround
head 72 adjacent to ?anges $1 and 83. A second step
89 is formed with angular side walls 911 which allow for
surface deformities or irregularities in bead 72 of spike
71 and has a ledge 91 protruding inward into opening
pressure responsive and is closed by pressure on button
36. One terminal of switch 117 is connected to ground
at 118 and the other terminal is connected by wire 119 to
the wire 115 leading to solenoid 1116. Thus the switches
1118 and 117 are wired in parallel and either switch will
energize solenoid 1116 when activated.
Each spike pulling assembly is ‘wired and controlled
independently, having the same manual or automatic
86. This ledge 91 is positioned directly under ?anges 81
control as just described. A four pole switch '120 is in
and 83 and contacts the lower surfaces of the ?anges to
engage the spike 71. Ledge 91 has a wide outer por 50 serted between switches 1G8 and the ground connection
at 114. Switch 121} is normally closed, but may be man
tion 92, and an equally wide side portion 93, which ter
ually opened to prohibit automatic operation and allow
minates in an angular portion 94 that widens as a corner
only manual control when desired.
ledge and merges into a narrow inner portion 95. The
Since the ?anges of wheels 11 and 12 are not positively
outer portion 92. abuts shank 73 under the outer ?ange
81 of head 72. The side portion 93 abuts shank 73 under 55 positioned upon the rails 76, the bed 10 must be cen
tered accurately to insure engagement of each spike 71
top ?ange 83. The angular corner ledge 94 abuts ex
as bed 19 travels along the'right of way. This is ac
tension 86 of head 72, and the narrow inner ledge 85
abuts the’ inner edge of extension 80 under the inner
complished by a guide unit 121} mounted at the outer
edge of top ?ange 33. It is to be noted that the thickness
edge of each rail 76 at the forward end of bed 10. One
of claw 761 under ledge 95 is at the minimum thickness 60 unit will be described (see FIGURES 7 and 11).
directly under ?ange 83. This thickness increases about
The guide unit 1211 is suspended by two cars 121 fixed
the circumference of opening 86 and is at a maximum
to the lower surface of beam 33a. A solid shaft 122 is
under portions 92 and 93. Since ledge 91 is widest along
rotatably mounted by cars 121 and is locked ‘against lat
the outer portion and side portions, these areas will exert
eral movement by washers 123. A collar 124‘ is journalled
the strongest lifting pressure upon head 72. However,
on shaft 122 and has a depending plate 125 attached to it
considerable force will be exerted by portion 95 of ledge
which is positioned parallel to the rail 76. A gusset .126
91 which further serves to position the claw 7t} and to
is fixed to collar 124 and plate 125 to rigidly support the
insure vertical movement of spike 71 and thus prevent
plate 125. The collar 124 is laterally positioned on shaft
bending or tearing of head 72.
The controls will now be described. The control box 70 122; by means of pins 127 which extend through both the
collar 124 and shaft 122;. The edge of plate 125 facing
60 mounted on bed 1t} is shown diagrammatically in
the bead 79 of rail '7 6 is provided with two horizontal ears
FIGURE 10 and comprises four control units 60a, 611b,
128, 129 mounted vertically one above the other. These
é?c, 613d, corresponding to the four spike pulling as
ears carry a shaft 131) which rotatably journals a roller
semblies. The details of one representative unit will be
75 131. Roller 131 rolls along the outer edge of bead 79
to thereby position the bed 10‘ to prevent sideward drifting
during travel.
A chain 132 is attached between plate 125 and support
member 49 of the outer spike pulling assembly 46. This
chain lifts the guide unit 120‘ for fast travel along the
said support structure and the front of said bed wired to
said solenoid, a manual control switch wired in parallel
with said spring-biased control switch and a second manual
switch wired in series with said spring-biased switch to
render said spring-biased switch inoperative.
tracks between operations. Chain 132 pulls unit 120 up
ward when assembly 46 is pivoted so as to lie on bed 10‘.
In traveling from one operating area to another, the
3. In a mobile rail spike puller for intermittently pull
ing spikes along a railroad right of way; the combination
with a wheeled supporting bed adapted to travel along a
rail, and means to laterally position said bed with respect
spike pulling assemblies 46 are pulled back over shafts
44 and guide units 120 are thereby retracted. Trans 10 to the rail; of a support structure mounted on the bed,
mission 21 is set in a high ‘forward speed to propel bed
means to restrain the lower end of said structure against
1101 along rails 76.
When operation is resumed, the assemblies 46 are low
rearward motion relative to the bed, spike engaging shoe
means slidably mounted by said support structure for
ered into contact with rails 76 ‘and the rollers 131 are
limited free movement up and down relative to the sup
anism. Transmission 21 is then set at a very slow forward
rail ?ange, said shoe means having an open claw at its
lower end adapted to be engaged under a spike head over
engaged with outer beads 79 to position the entire mech 15 port structure whereby it is adapted to slide along the
speed. The bed 10 is thus moved between ties along rails
lapping the rail ?ange during travel of the bed along the
76 until a spike 71 is contacted by one of the claws 70.
rail, and impact power means carried by said support
This will trigger the automatic switch 108 and one of the
pistons 105. Air will be forced into the cylinder 52, mov 20 structure operably connected to the shoe means adapted
to lift the shoe means after engagement of the shoe means
ing piston 61 upward. Yoke 64 will then carry lug 56
under a spike head.
upward at a high rate of speed to move hammer 54. When
4. A spike puller as de?ned in claim 3 wherein said
the lost motion in slot 76 is taken up, the momentum of
claw comprises an integral horizontal extension of said
hammer 54 will suddenly yank shoe 69 and claw 70 to
extract the spike 71. This motion will be almost instan 25 shoe means, a portion of the lower surface of said claw
being contoured complementary to the top surface of the
taneous, although any stoppage of bed 10 can be accom
rail ?ange along which said shoe slides, said claw further
modated by slippage in belt 25, If manual control is de
including an aperture opening toward the front edge
sired switch 120 is opened and the buttons 36459‘ must
thereof in the intended direction of motion of said bed
be manually manipulated. This action is desirable should
switch plates or other irregular con?gurations of spikes 30 on the rail, said aperture comprising a ledge adapted to
?t beneath the ?ange of a spike engaged by said claw.
be encountered.
5. A spike puller as de?ned in claim 3 wherein said
Holes 133 in shaft 44 laterally position the stub shafts
impact power means comprises a pneumatic cylinder
48 to accommodate various spacings of spikes which might
mounted on said support structure, a piston slidably
be encountered. Pins 134 inserted through the holes 133
mounted within said cylinder, :1 lost motion connection
positively space the spike pulling assemblies 46.
operatively connected between said shoe means and said
Various modi?cations will present themselves within the
piston ‘adapted to jar said shoe means upwardly after
scope of this invention, which is not intended to be limited
initial upward movement of said piston within said cylin
by this disclosure except as de?ned in the following claims.
der, said lost motion connection further providing the
Having thus described my invention, I claim:
1. In a mobile rail spike puller for intermittently pull 40 limited free movement of said shoe means relative to the
rail ?ange, a source of pressurized air mounted on said
ing spikes along a railroad right of way, the combination
‘bed, ‘and control means oper-atively connecting said source
with a bed supported by a plurality of rail engaging
of pressurized air and the interior of said cylinder at its
wheels, guide means depending from said bed to the rails
lower end adapted to selectively supply a charge of pres
adapted to center said bed with respect to the rails and air
supply means ?xed to said bed; of a lateral bar supported 45 surized air to the lower end of said cylinder to thereby
raise said piston.
forward of said bed parallel to the forward end of said
bed, a support structure pivotally journalled upon said
References Cited in the ?le of this patent
bar and adapted to abut the forward end of said bed in
its operative vertical position, air cylinder means mounted
on said support structure operatively connected to said air 50
Crane _______________ __ June 3, 1890
supply means, piston means slidably mounted within said
air cylinder means, spike engaging shoe means slida-bly
carried by said support structure adapted to slide along
the rail ?ange, and means operatively connecting said
spike engaging shoe means and said piston means whereby 55
the application ‘of pressure from said air supply means to
said air cylinder means causes said piston means to lift
said spike engaging shoe means from sliding contact with
the rail ?ange.
2. The device as de?ned in claim 1 wherein control 60
means is included between said air cylinder means and
said air supply means and comprises solenoid-controlled
valve means adapted to alternately connect said air cylin
Varner ______________ __ Mar. 8,
Simones _____________ __ Nov. 12,
Hastings ____________ __ Nov. 18,
Tompkins ___________ __ Oct. 25,
Maney _______________ _- July 3, 1928
Armstrong ___________ __ May 9, 1933
Hamilton ____________ __ Oct. 25,
Richardson __________ __ May 13,
Lemberger ____________ __ Nov. 1,
Austrow et al. _______ __ Mar. 10,
Creason ______________ __ Nov. 3,
Dann et al. _________ __ Mar. 15,
der means to said air supply means or to an exhaust
means, a spring-biased control switch mount between 65
Great Britain _________ __ June 9, 1894
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