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Патент USA US2409209

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Och 15» 1946.
T. J. HOLLENKAMP
2,409,207
EXTENDED END CONNECTION
‘_ Filed Oct. 17, 1944
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Patented Oct. 15, 1946
2,409,207
UNITED-STATES PATENT OFFICE. “
2,409,207
EXTENDED END CONNECTKON
Theodore J. Hollenkamp, Detroit, Mich.
Application October 17, 1944, Serial No. 559,109
9 Claims.
(01. 305410)
(Granted under the act of March 3, 1883, as
amended April 30, 1928 ; 370 O. G. 757)
1
2
The invention described herein may be manu
factured and used by or for the Government for
?ange having end portions 7 which partially sur
round the apertures 2. The inner surfaces of
the portions 1 are shaped concavely at 8 in co—
me of any royalty thereon.
incidence with the outer edges of the apertures
The present invention pertains to a novel de
in order to ?t against the pins 3 received in the
vice for increasing the ?otation of a vehicle track
apertures. The concave formation ‘may be ex
comprised of an endless series of successive blocks.
tended by means of inward projections 9 from
In one of the well known constructions of the
the end portions 1. The top of the connector 6
prior art, shown in U. S. Patent No. 2,314,355 of
is formed with a hole In to receive a stud ll
March 23, 1943, each track block has a pair of 10 carrying a wedge 12 which is tightened between
pins extending from each end thereof, and the
the pins 2. The structure thus far described is
pins of successive blocks are joined by a member
known in the art and is shown in United States
known as an end connector. This member con
Patent No. 2,314,355.
sists substantially of a link ?tted on the pins
The intermediate surface of the connectorn?lis'
of successive blocks.
15 extended outwardly in the form of a plate I3 hav
The invention consists in a construction where
ing a substantially larger dimension, laterally of
,by the exposed surface area of the link is extended
the track, than the connector 6 shown in Figure
in the outward direction or transversely of the
l. The'side portions 1 of the connector are also
track. The position of the extended portion or
extended outwardly as webs l4 joined with the
plate is such that it is ineffective when the track 20 ground-facing surface of the plate I 3 and hav4
governmental purposes, without the payment to
rides on a hard surface.
However, on a surface
so soft as to permit the track to make an im
ing their lower edges l5 sloping outwardly to the
lower surface of the plate. In addition, a trans
pression, the plate comes into contact with the
verse wall or web It is formed between the webs
ground and thus introduces additional ?otation.
M at the outer ends of the pin-receiving recesses.
The ?otation plate is reinforced by webs formed 25 The web it is preferably of triangular cross;
on its ground-facing surfaces, and these webs
section with one of its edges merging into the
function as additional grousers on soft ground.
Another, transverse web is preferably provided
between the first named webs. This member re
plate 13 and another edge joining the inward
extensions 9. The verticalface l?a of this web
H5, in addition to reinforcing the plate I3, rein
inforces the link and resists the spreading of 30 forces the connector 6 against the pressure of
the pins as the locking wedge shown in the afore
the wedge 52 as it extends between the webs M
mentioned patent is drawn tight.
which are on opposite sides of the pins 3'.
An illustrative embodiment of the invention is
When the track is running on a hard surface, ,
disclosed in the following description and in the
the extensions i3—l5 are substantially ineffec
accompanying drawing in which:
35 tive. On softer ground the webs [4 function as
Figure 1 is a top planview of the device;
additional grousers. If the ground is so soft as to
Figure 2 is a section on the line 2-2 of Figure 1;
be engaged by the plates l3, the latter introduce
Figure 3 is an end view;
additional ?otation in the ratio of the area of
Figure 4 is a section on the line 1i—-4 of Figure
two such plates to the area of a block assembly
1, and
40 without the extensions. By use of the extensions,
Figure 5 is a bottom plan view.
the ?otation of a standard track has been in
The body of the connector includes a guide
creased by approximately 21% with a vehicle
body I having two apertures 2 for receiving the
weight increase of only 1 %. It will be understood
pins 3 extending outward from the ends of a pair
that the extensions l3-15 may be welded, forged
of adjacent track blocks 4. From the inner edge 45 or otherwise integrally formed on the body of the
of the guide body I extends a guide 5, preferably
connector 6, the welded operation being particu
formed integrally therewith, for engaging an
larly satisfactory in modifying present construc
edge of the drive sprocket, the idler sprocket
tions and thereby increasing ?otation at a nom
and the bogie wheels as well known in the art.
inal increased cost. It is also to be noted that
Connectors of this character are employed at 50 the advantage of added ?otation can be accom
each edge of the track, and the guides of each
plished by having the web l3 at any level with
track block maintain the track on the several
respect to the surface of the block 4 but maxi
wheels.
mum clearance on hard surfaces and freedom
From the outer surface of the guide body I the
from distortion is accomplished in the location
connector 6 extends in the form of a U-shaped 65 shown.
2,409,207
While a speci?c embodiment of the invention
has been shown and been described, it will be
understood that various alterations may be made
without departure from the spirit of the inven
tion as indicated by the appended claims.
What I claim is:
_
1. An extended end connector for track blocks
comprising a body plate, means on a surface. of
4
sisting in the ?otation of the vehicle in soft earth.
6. An extended end connector for track blocks
comprising a body plate having a pair of aper
tures for receiving the track block pins of suc
cessive blocks, a substantially U -shaped connec
tor clip extending from the outer surface of said
plate‘ and having an intermediate portion and
end pieces partially enclosing said apertures to
engage such block pins, a ?otation plate extended
said plate for connecting a pair of successive track
blocks, and a ?otation plate extended outwardly 10 outwardly from said intermediate portion and
having a ground-facing surface for assisting in
from said connecting means perpendicularly to
the ?otation of the vehicle in soft earth, and webs
said body plate and having a ground-facing sur
on. said ground-facing surface and lying substan
face for assisting in the ?otation of the vehicle
tially perpendicular thereto.
in soft earth.
'7'. An extended end connector for track blocks
2. An extended end connector for track blocks 15
comprising a body plate having a pair of aper
comprising a body plate, means on a surface. of
tures for receiving the track block pins of suc
said plate for connecting a pair of successive
cessive blocks,.a substantially U-shaped connector
track blocks, a ?otation plate extended outwardly
clip extending from the outer surface of said
from said connecting means perpendicularly to
said body plate and having a ground-facing sur 20 plate and having an intermediate portion and end
pieces partially enclosing said apertures to engage
face for assisting in the. ?otation of the vehicle
such block pins, a ?otation plate extended out
in soft. earth, and webs on said ground-facing
Wardly from said intermediate portion and hav
surface and lying substantially perpendicular
ing a ground-facing surface for assisting in the
thereto and. to said body plate.
?otation of the vehicle in soft earth, webs on said
3. An extended end connector for track blocks
ground-facing surface and lying substantially
comprising a body plate, means on a surface of
perpendicular thereto, and a transverse web join
said plate for connecting a pair of successive track
ing the ?rst named webs.
b1ocks,,a ?otation plate extended outwardly from
8. An extended end. connector for track blocks
said connecting means. perpendicularly to said
comprising a body plate having a pair of aper
body plate and having a ground-facing surface
tures for receiving the track. block pins of suc
for assisting in the ?otation of the vehicle in soft
cessive blocks, a substantially, U-shaped con
earth, Websvv on said ground-facing surface and ly
nector clip extending from thev outer surface of
ing substantially perpendicular thereto and to
said plate and having an intermediate portion
said body plate, and a transverse: web joining the
and end pieces partially enclosing said apertures
35
firstv named webs.
to, engage such block pins, a ?otation plate ex
4. An extended end connector for track. blocks
tended outwardly from said intermediate portion
comprising. a body plate, means on a surface of
and having a ground-facing surface for assisting
said‘ plate for connecting a pair of successive track
in the ?otation of the vehicle in soft earth, webs
blocks, a. ?otation plate extended outwardly from
said connecting. means perpendicularly to said 4.0 on. saidground-facing surface and lying substan
tially perpendicular thereto, and a transverse web
body plate and having av ground-facing surface
joining the ?rst named webs atv the junction of
for assisting in, the, ?otation of the vehicle in soft
said ?otation plate with. said body plate.
earth, webs on said ground-facing surface and 1y
9. The combination with an end connector of
ing. substantially perpendicular thereto and. to
the class described, comprising a link. adapted to
said body plate, and. a transverse web joining the
extend. between and to connect the outer end por
?rst named webs at the. junction of said ?otation
tions of adjacent link pins of a pair of adjacent
plate with said means.
track, shoes, of a ?otation plate carried by said
5. An extended end connector for track blocks
link and. disposed substantially parallel to the
comprising a body plate having a. pair. of aper
tures for receiving the track. block, pins of succes 50 length. of. the latter, said plate being disposed on
the outer side of said link to extend outwardly
sive blocks, a substantially U-shaped connector
therefrom outside of the connected link pins so
clip extending from the outer surface of said
that the area of said plate may be e?ective for
plate and having an intermediate portion and end
assisting. the associated track shoes in the ?ota
pieces partially enclosing said apertures to en
gage such block pins, and a ?otation plate ex- I
tended. outwardly from, said intermediate por- '
tion and’ having a ground-facing surface for as
tion of the vehicle on soft earth.
THEODORE J. HOLLENKAMP.
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