A New of improved Angle wig halls.
Year: 1897

page_text: Date of Application, 25th Feb., 1897
Complete Specification Left, 22nd Dec., 1897-Accepted, 22nd Jan., 1898
A New of improved Angle wig halls.
I, SAMUEL HENRY CROCKER, of 31, Furnival Street, London, Engineer, do hereby
declare the nature of this invention to be as follows :-
This invention relates to a joint for use with revolving shafts or rods which can be
employed for gearing purposes allowing motion to be transmitted through such
shafts or rods placed at or near right angles.
$6
The ordinary universal joint" cannot conveniently be applied for transmitting
power from one revolving shaft to another at right angles to it, but is only suitable
when such shafts form an obtuse angle one with the other.
My invention provides a joint which can be used without difficulty between shafts
revolving at right angles.
I employ an arrangement of links to form this joint so connected by means of cross
pins that on turning one shaft the other shaft to which the former is joined will also
turn. Three links are preferably employed to form this joint or gear, placed
alternately. The end links are pivoted to the extremity of the shafts and turn in
planes at right angles to each other. The central link joins these together. A
peculiar double motion is thus given to the central link on turning the shafts the
motion being made up of an oscillation at each end, this oscillation being at right
angles, and caused by the end links. Owing to the central link the motion can be
freely transmitted from one shaft to another.
In order that the invention may be more clearly understood reference is had to the
accompanying sheet of drawings in which Fig. 1 is an elevation of a joint, or gear
according to my invention, Fig. 2 is a perspective view of one of the links, Figs. 3
and 4 show a slightly modified arrangement.
Referring to Figs. 1 and 3 A, A¹ are the shafts. The end of A is forked at a and
the end link B is connected to the shaft by the pin b.
The central link B¹ is pivoted to B by the pin b¹ to the end link, so that it can
turn on the pin at right angles. The link B2 is connected to the link B₁ by a pin b²,
and to the end of the rod or shaft A by the pin b³. Thus each link can turn at
varying angles to the adjacent links, so that a revolving motion can be transmitted
from one shaft to another at right angles to it.
To prevent the shaft shifting longitudinally the collars C are formed on each shaft
which are carried in bearings c situated between the collars.
The arrangement shown in Figs. 3 and 4 is a modification of my invention suitable
for transmitting a small amount of power. The links B B1 and B2 are formed from
strips of metal bent into U form and perforated near their extremities, to allow the
central projections b b to pass through.
The arrangement is otherwise similar, but this form of link enables the device to be
made very light, and less expensive.
Dated this and day of JanuAND 1007

page_text: A New or Improved Angle Joint for Revolving Shafts.
I, SAMUEL HENRY CROCKER, of 31, Furnival Street, London, Engineer, 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:
The ordinary "universal joint" cannot conveniently be applied for transmitting
power from one revolving shaft to another at right angles to it, but is only suitable
when such shafts form an obtuse angle one with the other.
My invention provides a joint which can be used without difficulty between shafts
revolving at right angles and the device is moreover capable of transmitting power
between shafts at an angle other than a right angle, and further more it is not essential
that both shafts shall be revolving in the same plane.
I employ an arrangement of links to form this joint so connected by means of cross
pins that on turning one shaft the other shaft to which the former is joined will also
turn. Three links are preferably employed to form this joint or gear placed
alternately. The end links are pivoted to the extremity of the shafts and turn in
planes at or about right angles to each other varying according to the angle at
which the shafts are working. The central link joins these end links together. A
peculiar motion is thus given to the central link on turning the shafts, the motion
being made up of oscillations at each end, caused by the end links, in combination
with the turning motion. Owing to the central link the motion can
be freely
transmitted from one shaft to another.
In order that the invention may be more clearly understood, reference is had to
the accompanying drawings filed with my Provisional Specification in which
Fig. 1 is an elevation of a joint, or gear, according to my invention.
Fig. 2 is a perspective view of one of the links.
Figs. 3 and 4 show a slightly modified arrangement.
In the arrangements illustrated the shafts to be connected are at right angles to
one another.
Referring to Figs. 1 and 3, A, A¹ are the shafts. The end of A is forked at a and
the end link B is connected to the shaft by the pin b.
The central link B1 is pivoted to B by the pin b¹ to the end link, so that it can
turn on the pin at right angles. The link B2 is connected to the link B¹ by a pin 62
and to the end of the rod or shaft A¹ by the pin 63. Thus each link can turn at
varying angles to the adjacent links, so that a revolving motion can be transmitted
from one shaft to another at an angle to it.
To prevent the shaft moving longitudinally the collars C are formed on each shaft
which are carried in bearings c situated between the collars. The arrangement shown
in Figs. 3 and 4 is a modification of my invention suitable for transmitting a small
amount of power. The links B B1 and B2 are formed from strips of metal bent into U
form and perforated near their extremities, to allow the central projections 6 b to pass
through:
The arrangement is otherwise similar but this form of link enables the device to be
made very light and less expensive.
It will readily be seen that if the angle between the two shafts were lessened so as
to form an acute angle, or widened so as to become obtuse, the device would work.
Also the shafts may be in slightly different planes. In some cases it may be advisable
to use more than one link to perform the work of the central link in connecting the
two shafts.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) An improved angle joint for transmitting power from one revolving shaft to
another, comprising an arrangement of links pivoted together, the end ones being
pivoted to the shafts to be connected and the central link or links connecting the said
end links together, substantially as described.
(2) An improved angle joint. for transmitting power from one revolving shaft to
another comprising an arrangement of three links, the end ones being pivoted to the
shafts to be connected, and the third or central link joining the said end links together,
substantially as described.
(3) An improved angle joint for transmitting power from one revolving shaft to
another, comprising the three links B, B1 B2, the links B and B2 being pivoted in the
ends of the shafts A and A¹ respectively, and the central link B¹ pivoted to the links B
and B2 substantially as described and shown in the drawings.
(4) An improved angle joint for transmitting power from one revolving shaft to
another, substantially as described with reference to Figs. 1 and 2 and to Figs. 3
and 4 of the drawings.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.