Improved Shaft Coupling.
Year: 1890

page_text: Date of Application, 30th Aug., 1890
Complete Specification Left, 1st June, 1891-Accepted, 11th July, 1891
PROVISIONAL SPECIFICATION.
Improved Shaft Coupling.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by David Boorman, of Altoona, l'ennsylvania,
U.S.A., Inventor,) to be as follows:-
This invention has reference to certain new and useful means for coupling
shafts.
By this invention the ends of the shafts are formed with key seats which extend
a suitable distance along each shaft, and increases in depth from the ends of
the shafts. A suitable collar is provided, and has key-seats adapted to receive
keys made to conform to the shape of the openings formed by the key-seats in
the shafts, which register with one another. These keys are parallel upon the
faces which enter the key-ways in the collar, but are wedge shaped upon their
under sides to fit the key-ways in the shafts. Nuts are fitted upon the screwed
end of each key, and which, when tightened against the side of the collar, serve
to retain the shafts together, and the collar in position.
Dated this 30th day of August 1890.
J. P. BAYLY,
Applicant.
COMPLETE
SPECIFICATION.
Improved Shaft-coupling.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by David Boorman, of Altoona, Pennsylvania,
U.S.A., Inventor,) 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 an improvement in shaft-couplings, the object being
to provide a simple and solid coupling which can be readily tightened, loosened,
or coupled, or uncoupled, and with this end in view it consists in a pair of shafts,
a collar having key-seats or recesses therein, and an opening through it to receive
the ends of the shafts to be coupled thereto, in connection with wedge-shaped
keys adapted to fit in recesses in the shafts, and nuts or equivalent devices for
tightening the coupling.
It further consists in certain novel features of construction and combination
of parts as will be hereinafter described and pointed out in the claims.
In the accompanying drawings,
Fig. 1 is a side elevation showing interior construction in dotted lines.
Fig. 2 is an end elevation of the collar.
Fig. 3 is a detached view of the end of the shaft to be coupled, and
Fig. 4 is a view of one of the keys.
A and B represent a pair of shafts, the ends of which are provided with one or
more preferably two or three-key-seats 1 1. The depth of the latter increases
gradually as they extend from the extreme ends inward toward the centre. C 15 a
collar, the centre of which is bored to receive the ends of the shafts. The collar
is provided with key-scats 2, cut straight through the collar, their number being
double the number of key-seats in each shaft, and when the ends of the shafts are
inserted in the collar the key-seats in the two shafts are made to register with
EDC1

page_text: alternate key-seats in the collar, and the openings formed by such key-seats are
adapted to receive suitable keys. D represents these keys. They are a trifle
longer, or, if more convenient, about the length of the collar, and their shape
conforms to the openings made by the superposed key- eats, one end having an
inclined edge adapted to rest upon the sloping portion of he key-seat, and the back
is straight, as well as the portion bb, between the sloping portion and the small
end of the key so as to form no obstruction to the end of the shaft opposite this
portion. The keys are screw-threaded on the small end, and nuts 3 3 are turned
on them to draw them up tightly into the key-seats, and to tighten the shaft-
coupling. The ends of the collar are preferably flanged so that the ends of the
keys are partially, if not wholly, concealed. When the parts are assembled the
alternate keys, of course, are turned in opposite directions, and the nuts are
screwed on tightly. When thus assembled the shafts are helt securely together
and prevented from turning. It is evident that slight changes might be resorted
to in the form and arrangement of the several parts described without departing
from the spirit and scope of my invention, and hence I do not wish to limit myself
10 the exact construction herein set forth.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a shaft-coupling, the combination, with a pair of shafts having key-sents
formed thereon, said key-seats corresponding in depth from the ends of the shaft
towards the centre of a collar having key-seats therein, keys made to conform to
the shape of the openings formed by the key-seats in the shafts and collar when
registering with one another, and devices on the ends of the keys for holding them
sucurely in place, substantially as set forth.
2. In a shaft coupling, the combination, with a pair of shafts having key-scats
therein which increase in depth from the ends towards the centre of the shafts, of a
collar having straight key-sents therein, keys formed to correspond in shape with
the openings formed by the key-seats in the shafts and the collar registering with
one another, the ends of the keys protruding out at the ends of the collar, and
having threads thereon, nuts for tightening the keys and flanges on the ends of the
collar, substantially as set forth.
Dated this 30th day of May 1801
J. P. BAYLY,
Per P. W.