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Патент USA US2406253

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2,406,253
Patented Aug. 20, 1946
- UNITED ‘ STATES PATENT OFFICE
.FRICTION-TIPPED BELT BLOCK
Paul B. Reeves, Columbus, Ind” assignonto Reeves .
Pulley Company, Columbus’, Ind., a corporation
of Indiana
Application October 1, 1943,.Serial‘Noi 504,541.
2 Claims.
(Cl. '74‘—236)
1
, The .present invention relates to‘ belt blocks,
and .more ‘particularly to thattype. of belt block
which is used to provide. transverse stiffness in
connection with agpulling web which is inherent
ly transversely ?exible, and which is provided, at
its opposite ends, with allochirally inclined sur
faces to which are. suitablysecured friction pads
for cooperation with .theiinclined surfaces of V
pulleys.
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Theprimary object oftheinvention is to pro~
vide a» suitable metal ‘block of the type here un
der consideration. A further object of the in
been attempted; but standard commercial prac
tice has been to nail andglue a pad to each. end
ofeach section of each block.. ..
There areobvious disadvantages to such a con
‘.struction,. including the. necessity ‘for separately
securing .four pads to the ends-of the two sections
ofeach. block asembly, thedit?culty of perform
ing .thev nailing,.operation, the impossibility of
bringing thecorrespondingyends- of the two sec
tionsof woodenblockintotrue coplanar relation,
andthe- fact that the. nail heads will eventually
beexposed by padwear. ,
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V
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7
By the presentinventionl believe thatI have
overcome‘not only the mentioned dif?culties, ‘but
the friction pads to theopposite- ends of such a 15 manypif not all,-of the other disadvantages vof
the stiffener-blockstructure which has‘been used
block... A» further object of ,thetinvention is to
according to standard practice in the past; '
provide-a novel and ef?cient means for securing
Referring moreparticularlyato ‘the drawing, it
such a block. to~a~be1t body.‘ Further objects
will be seen that I;have illustrated a-fragment
of-the-inventioni-rwilleappear as the description
vention is. to provide,_.in connection with such a
block, novel and effective emeansffori securing
proceeds.v
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of a belt body Ill of any standard construction,
togetherwith a ‘sti?ener block assembly, indi
cated generally byrithere-ference vnumeral I I-, op
lated objects, myinvention may be embodied.. in
erativelyrassociated therewith; The assemblyv II
theliform illustrated, ml the accompanying draw
includes a main- body element (or beam l2 which
ing, attentionbeing called to the‘fact, however,
that the drawing is illustrative ‘only, and that 25 is formed atits opposite ends vto provide allo
chirally angularly‘ related faces I 3' .and- I 4.~ As
change may bermadein the speci?c construction
is clearly to bewperceived- from an inspection of
illustratedand ‘described,’ so long as: the-scope
therdrawinglthe faces: I3 and M are equiangll
of the appended claims is not violated. , 1 ;
d To theaccomplishment ofthe above and, re
‘Fig; l is a top plan view of a sti?ener block, ;» \
constructed in accordance with the present in
vention, and associated with a section of a belt
body;
larly inclined inwardly-and- towardieach other.
The angle of inclination selected is substantially
the angle of inclination of the faces of the V
‘ pulleys with which the belt is to be used.
line 2-4 of Fig. 1 and looking in the direction
Since the faces l3 and I4 are, in all respects,
allochiral, only one will be described. Each of
of the arrows;
with a vertically extending ledge or lip or blade
_
Fig. 2 1s a section taken substantially upon the
Fig. 3 is a bottom plan view of the illustrated
such faces is provided, at its right-hand edge,
I5, which is undercut as at I6; and each of said
faces is further provided with a second, sub
stantially parallel, similar ledge I'I, undercut as
main block body;
Fig. 5 is a section taken substantially upon the 40 at I8, adjacent its opposite edge, the ledges I5
and I1 facing each other in the manner clearly
line 5-5 of Fig. 2 and looking in the direction
illustrated in Fig. 4. Each of the faces I3 ‘and
of the arrows; and
I4 is further provided, adjacent its upper edge,
Fig. 6 is a view similar to Fig. 4 but showing a
with
a similar ledge I9, undercut as at 20, and
friction pad in place upon the block end.
extending in the direction of belt movement. It
stiffener ‘blocks, intended for the purpose for
will be seen that the line of the ledge I9 inter
which the device of the present invention is in
sects the substantially parallel lines of the ledges
tended, have of course long been used in con
I5 and I1 and, in the preferred embodiment of
nection with transversely ?exible belt bodies. The
standard construction, however, has always been 50 the invention, those lines willintersect substan
tially at right-angles.
a two-piece wooden block, the two block pieces
A pad 2| of suitable friction material and of
being clamped upon opposite surfaces of the belt
desired con?guration, is adapted to be asso
body byvmeans of bolts passing through the two
ciated with each of the faces I3 and I4. The
block sections and the belt body, and nuts set
dimension of the pad 2|, in the direction of belt
‘upon the bolts. Various means for securing fric
55
movement,
is slightly greater than the distance
tion pads to the ends of the block sections have
_ embodiment of the invention;
Fig. 4 is an end elevation of one face of the
2,406,253
K, J. \h ..
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_.v
‘ between the. ledges l5 and I1, and slightly less
shifted toward and away from the wall 26 of the
than the distance between the bases of the un
socket 23, and will cooperate with'said wall 26
dercuts l6 and IS. The faces l3 and I4 being
to clamp“ the block assembly in ?xed positionj
unobstructed at their lower edges 22, it will be
upon a belt of any thickness within a consider- '
clearly perceived that the pads 2| can be laid
able range. The closure 3| is formed with one
upon those surfaces, adjacent their lower edges
or more smooth bores 34 adapted to register with l
22, and then can be forced upwardly, sliding upon
a like number of perforations 35 preliminarily
the surfaces 13 and [4, in such a fashion that
formed
in the belt body “Land with alike num
the ledges l6 and I‘! will cut grooves in the
ber
of
tapped
holes 36 inlith’e beam-112, for the
leading and trailing edges of the pads 2|; and 10 reception of clamping bolts 31, whereby the clo
' it will be further perceived that'the pads may be‘, -
so strongly forced against the sharpenedledge~
I9 that said ledge will be embedded in the upper
edge of the associated pad. Thus,- after'the pad
has been forced into position, it ‘will be seen that
the pad material will overlie vand. underlie each
of the ledges l5, l1, and I9.
sure 3| can be drawn into clamping relationship
with the belt body I0.
I claim as‘ my invention:
7
1. For ruse-with. a transversely-?exible fbelt
is body, a'stiffener block comprising a rigid main
body formedwith a socket adapted to receive
a portion of said belt body, said socket being de
A suitable glue or cement will be applied either ' ' ?ned by opposite- end walls spaced from each2
to the inner pad surface or to the blo,ck;face,‘_or
other a distance greater than the transverse di- ‘
to both, before the. pad is forced into place.
20 mension of the belt with which said block-is
1 For facilitating the association .of the block V to beused, asubstantially continuousvbasewall
of the, present invention with the belt body,y_I
joining said ‘end walls, I and.‘ a ‘pair _'0f'Wa,11S._‘6jX
form the inner surface of thebeam £2 ‘to pro» tending, respectively,‘ from said end walls to,
vide a socket 23 which is de?ned by end walls
ward each other insubstantial parallelism with
24 and 25,'sp_aced aparta distance somewhat 25 said base_wall,,_said last-namedwalls terminate’, '
greater than-the transverse dimension of the
ing at point- spaced from eachother ‘a distance
belt with which the block is to be associated, a
slightly ‘less than said belt dimension, a closure
for saidjsocket receivable betweenthe termini ‘of i
substantially continuous base wall 26>joining .the
end walls 24 and 25', ‘and a pair of further walls
said last-named walls for retaining said'belt body _
2'! and 28 projecting toward each‘ other, respec
portion in said socket, and means for securing
tively,.from the end walls 24 and;25,7in substan- " said closure in place inisaid socketin clamping
tial parallelism with the basewall 2s, The walls
engagement with the ‘said belt body portion.
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2.? For use with a transversely-?exiblev belt
21 and 28 terminate at points spaced from each
other a distance slightly less than the transverse V
body, a stiffener block ‘comprising a rigid'main
vdimension of the belt with which the block is 35 body formed with a socket adapted‘to receive
to be associated. Thus it will be seen that, by '
a portion of said belt body, said'socket being dc:
slightly transversely distorting the belt body, the
?ned by opposite end walls spaced from each '
opposite edges of thatbody can be inserted be
tween the wall 26 and thewalls 21 and'28, re
other a distance greater than the transverse di;
mension of the belt with which said block is to
v spectively,'whereby
the beam I 2 is lightly held in 40 be used, a substantially continuous base wall ‘join
‘
position, upon the belt bodyj
, V
' ~ ing said end walls, and a pair of walls extend
'7 The'wall 21 merges in a vertical wall 29, ‘sub
stantially perpendicular to’ the wall 26, and fac
i-ng, respectively, from said end walls toward each
ing' inwardly; while the wall 28 similarly merges
wall, said last-named walls terminating 'at points '
in an inwardly facing vertical wall 36. A 010
sure plate or bar 3| for the socket 23 is formed '
other in substantial parallelism with said base
45 spaced- from each other a'distance ‘slightly less
at its opposite ends‘ with surfaces 32 and 33
adapted to mate,'respectively,'with the‘walls' 29
and 30, so that the closure 3| ,‘ being slidably
received between the walls 29 and 30, can be 60
than said belt dimension, and means engageable
with said main body and with said belt bodypor
tion to hold said‘ main'body in position’ on said
belt
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body.
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PAUL B'REEVES.
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