Year: 1899

page_text: I, ZACHARIAH KEOUGH, of 44, Auburn Street, Shelby, Ohio, U.S.A., Inventor,
do hereby declare the nature of this invention to be as follows:-
This invention relates to friction clutches; the object of the invention being
to provide a clutch which will be more efficient in use than those at present
employed.
A clutch constructed in accordance with my invention comprises a pulley,
mounted upon a shaft, and having a broad rim. A series of radial arms, having
spherical ends, have one extremity fitted in radially arranged sockets which
have recesses leading out radially therefrom to the outer periphery of a hub
of less width than the diameter of the extremities of the arms; so that the
walls thereof confine a part of the intermediate portion of the arms to retain
them in place. The recesses and sockets open out laterally of the hub so that
the arms may be readily inserted in position. The outer extremities of the
arms are seated in blocks or rim sections which are adapted to be brought into
frictional contact with the inner peripheries of the rim of the pulley when
the arms are projected outwardly by moving the hubs towards each other.
The means for moving the hub or hubs comprise a rack-bar arranged parallel
A fixed collar
with the shaft on each side thereof and connected to the hub.
surrounds the shaft, a distance from the pulley, forming a guide for the outer
end of the racks. A pinion is confined by the collar on each side of the shaft
in such manner as to mesh with the racks and a yoke vertically movable with
its bail portion centrally beneath the collars and its ends guided in the collar
and toothed one end thereof meshing with each of the pinions and means
pivoted centrally of the bail and having a vertical reciprocating and swinging
movement adapted to reciprocate the bail in a direct vertical line.
1300
P. R. J. WILLIS,
Agent for Applicant.
I, ZACHARIAH KEOUGH, of 44, Auburn Street, Shelby, Ohio, U.S.A., Inventor,
do hereby declare the nature of this invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:--
My invention relates to that class of mechanical device known as a friction
clutch and has for its object the provision of such a device as will be effective

page_text: in action, and of a strong and simple construction. My invention includes a
clutch-iim adapted to be applied to the pulley, a slidable hub, and connecting
arms having their ends seated and retained directly in the solid or body portion
of the said rim and hub. Further a box-casing carrying a pinion and guiding
a rack which is moved by said pinion to operate the clutch and a second rack
for operating said pinion, also guided in said box-casing with means for re-
ciprocating the latter rack transversely of the shaft.
Reference being had to the drawings:-
Figure 1 is a side elevation of a pulley and part of a shaft with my double
clutch applied to the same.
Fig. 2 is a top plan view of Fig. 1.
Fig. 3 a detail view shewing a section through the shaft and illustrating the
roller bearings between the shaft and the hub.
Fig. 4 a detail section through the shaft and illustrating the yoke and gear
connections for operating the hub.
Fig. 5 a complete sectional view taken longitudinally.
Fig. 6 a view looking at the inner face of the hub and shewing the arms
connecting the hub with the clutch-rim.
Fig. 7 a view shewing the outer face of the hub and also the means for hold-
ing the clutch in and out of gear.
Fig. 8 a detail view of the clutch actuating mechanism.
A loose pulley A is mounted upon a shaft B and my clutching device is
adapted as usual, to engage the pulley and fasten it with the shaft to rotate
therewith.
The friction clutch includes a hub C, having a flat inner face, the said hub
being adapted to be moved longitudinally upon the shaft B, and a rim 1) which
engages with the under face of the pulley A. The rim D is connected to the
hub C by a series of pivoted arms which with the hub act as toggle levers
to force the rim 1) against the under face of the pulley A. The clutch is used
double, one on each side of the pulley; the construction and operation of each
single clutch being substantially the same.
By use of a double clutch I am enabled to use two oppositely rotating shafts,
their ends abutting, one clutch being fitted on the one end and one on the other,
and the pulley can be used in conjunction with either clutch to rotate in one
direction or the other according to whichever clutch is put in operation.
Within the shaft B for a portion of its length are formed grooves E (Figs. 3
and 5) and the hub C is fitted to engage these grooves and to make movement
easy I insert a series of balls into grooves or channels formed in the faces
of the hub which are opposite the walls of the grooves in the shaft B.
Arms G connecting the rim and the hub have enlarged spherical ends. The
rim 1) consists of a series of independent sections each supported by two of
the arms G and each section is made up of two parts bolted together and hav-
ing hemispherical recesses in their opposing faces which form sockets or seats
for the outer ends of the arms G. The hub has radial recesses therein open-
ing from the flat face thereof and the inner ends of which are slightly enlarged
and rounded to provide sockets or seats to receive the inner spherical ends of
the arms G. The recesses in the face of the hub C permit of the ready insertion
of the inner ends of the arms (therein. and to retain them in place plates H
are secured to the face of the hub (', and a spring H₁ acts upon the outer face
of each arm. In applying the clutch the outer ends of the armis (+ bear
directly against the rim D), and the inner ends of said arms G bear directly
against the solid or body portion of the hub (', and thus there are no inter-
mediate connections between the hub, arms and rim which are subject to strain
in applying the rim to the pulley and no parts that may bind or break other
than the said hub, arms and rim. The hub C is moved longitudinally upon
the shaft B by means of a yoke I extending to a foot or hand lever J and the
said lever may engage with a rack K to hold the clutch in or out of gear.

page_text: In rear of the hub C a box casing L surrounds the shaft B and is formed of
an upper and lower section, each provided with corresponding lateral flanges.
The upper lateral flange on each side of the shaft B has a recess on its under
face in which are guide rack bars M having their ends connected to the con-
tiguous hub C. The flanges of the lower section of the box-casing L are recessed
to accommodate pinion which mesh with the teeth of the rack bar M. The
prongs of the yoke I are toothed to provide rack-bars, one of which passes on
each side of the shaft B, being guided in openings through the flanges of the
box casing L to one side of the rack-bars M and in mesh with the outer end of
the pinions N so that as the yoke I is reciprocated transversely of the shaft B
it will rotate the pinion N which will reciprocate the rack bars M parallel with
the shaft B and operate the clutch.
The rack bars M connect at their inuer ends with a collar O embracing an
extension of the hub C and a ball bearing is provided between the face of the
collar and a ring 0¹.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
-
(1) The combination with a pulley, a shaft, a rim, of a series of radial arms
having spherical inner ends and a solid hub having sockets therein to receive
said ends, recesses leading out radially from said sockets to the outer periphery
of the hub of less width than the diameter of said ends, the walls thereof con-
fining a part of the intermediate arms, said recesses and sockets opening out
laterally of said hub whereby the arms may be readily inserted in position,
substantially as described.
(2) In combination, the shaft, the pulley, the rim, the hub having the arms
connecting the same and the means for shifting the said hub comprising a
rack bar arranged parallel with the shaft on each side thereof having a connec-
tion to said hub, a fixed collar surrounding the shaft a distance from the
pulley forming a guide for the outer end of said racks, a pinion confined by
said collar located on each side of the shaft in mesh with said racks and a voke
vertically movable with its bail portion centrally beneath said collars and its
ends guided in said collar and toothed, one end thereof meshing with each
pinion and means pivoted centrally of said bail having a vertical reciprocatory
and swinging movement adapted to reciprocate the bail in a direct vertical
line, substantially as described.
Dated this 14th day of March 1900.
P. R. J. WILLIS,
Agent for Applicant.