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Патент USA US2126953

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Aug. 16, 1938. ‘
Filed Aug. 12, 1955
Patented Aug. 16, 1938
Charles I. Earl], York, Pa.
Application August 12, 1935, Serial No. 35,796
1 Claim.
(Cl. 191-85)
My invention relates to brackets or holding
mechanism for securing or attaching trolley re
trievers, trolley catchers or similar equipment
to the dash of vehicles such as street cars, track
5 less trolley coaches and the like.
The object of my invention is to provide a
bracket which is adapted to be permanently se
cured to the dash of the vehicle and a case for
the trolley retriever or trolley catcher, as the case
10 may be, adapted to contain the operating mech
anism of such device and provide cooperating
mechanisms between the bracket and the case by
means of which the retriever or catcher, as the
case may be, may be readily attached or de
' tached from the bracket and when attached may
be operated to rigidly hold the case in the bracket
and to prevent vibration or rattle of the case in
the bracket.
My invention consists in providing lugs on the
20 case or on the bracket and recesses on the bracket
or the case adapted to co-act in the manner of
the well known bayonet joint and in providing a
cam adapted to operate between the bracket and
a part of the case to take up the lost motion be
25 tween the lugs and the recesses which they are
adapted to enter and between the bracket and
the case to hold the case and bracket rigidly and
to prevent any relative vibration or rattle.
In the drawing accompanying and forming part
30 of this speci?cation Fig. 1 is a section on line
|-—| of Fig. 2. Fig. 2 is a front view of the
bracket. Fig. 3 is a section on line 3—-3 of Fig. 2.
Figs. 4 and 5 are rear and side views respectively
of a part of the case which is received into and
secured by the bracket. Figures 6, 7 and 8 are
sections on lines 6—6, 1-'|, and 8-8 of Figure 2.
The reference numerals are used in the same
sense throughout the drawing and speci?cation.
In the preferred embodiment of my invention
I provide a bracket, numeral I, adapted to be
bolted to the dash of the car. This bracket is
provided with an annular ?ange 2 forming a
recess adapted to receive the cylindrical portion 3
of the case and it is provided with the recesses 4
' which are adapted to receive the lugs M on the
case, in the well known manner of the bayonet
These recesses or pockets 4 are each formed
with an opening 42 of su?lcient size to admit lug
distance either way from the line of the diameter
and raised above the bottom of the recess. These
seats and ribs 4| of the recesses or pockets have
their faces in the same plane and together afford
four seats against which the rear face 6 of the
case may rest.
A slot 52 is formed in ?ange 2 through which
extends a Wedge shaped cam ‘I carried by axial 10
pin 8 which has its bearing in a lug 82 on the
outside of ?ange 2. Handle 9 serves as means for
rotating the cam on its axial pin. The cam is of
gradually increasing thickness from its upper end
II to its lower end In.
In order to permit the cylindrical portion 3 of
the case to be inserted in the recess formed by
?ange 2 the handle 9 will be swung upward from
the position in which it is shown in Figure 2 so
that the cam will be out of the way.
After the ‘’
cylindrical portion 3 has been inserted in the re
cess of the bracket and rotated to bring the lugs M
in position back of lips 43 within the recesses 4
there will be a clearance between the back 6 of the
case and seats 5 and 5|. By turning handle 9 to
the position in which it is shown in Figure 2 cam I
is forced through slot 52 into this clearance space
to cause, by its wedging action, cylindrical por
tion 3 to move forward to force lugs l4 against
the walls of the recesses or pockets 4 with the re- 3’
sult of holding the case rigidly against any move
ment relative to the bracket.
In order to hold the case in a central position
in the bracket and at the same time provide
abundant clearance between the ?ange 2 of the
exterior of the case which enters said ?ange I
provide an annular opening H in the bracket
which is adapted to receive the relatively small
projection l3 on the back of the case.
It will be obvious that the same bene?ts may
be secured by mounting the cam ‘I on the case
and providing for its proper engagement with the
bracket |. The importantfeature of my inven
tion being that means is provided for using un
?nished castings for both the case and the
bracket with abundant clearances for such un
?nished castings and at the same time obtain a
connection which is rigid and free from rattle.
It has been found that not only is the noise of
l4 and a retaining wall or lips 43 behind which
the rattle objectionable in the modern quiet run
the lug may pass and be retained by it against
forward movement, and they are arranged dia
metrically opposite each other and each has along
ning street cars and more particularly on the
its inner edge an annular rib 4| having a ?at face.
two recesses 4 I arrange a seat 5 and diametrical
ly opposite it a seat 5| each extending a short
At one side of the bracket midway between the
trackless trolley coaches which run on rubber
wheels but the continual vibration and oscillation
of catchers and retrievers in their brackets as
heretofore made causes excessive wear on the 55
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