Improvements in Frictional Clutches.
Year: 1890

page_text: Date of Application, 8th Sept., 1890
Complete Specification Left, 6th June, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Frictional Clutches.
ELIJAH YEADOx 21 Harrison Avenue Stanningley near Leeds Manager
THOMAS GARFORTH RHODES Albert Terrace, Kirkstall, Leeds Mechanical
Draughtsman do hereby declare the nature of this invention to be as follows:-
-
This invention has principally for its object the arrangement of a frictional
clutch, giving more wear, of the friction straps & more clearance of the driving
disc, than friction clutches of the spring ring construction the wear of which is
limited to the spring of the friction ring. This apparatus is constructed as follows,
a disc plate is made to run loose on the drive shaft, to this plate (which is the
driver of the pulley or wheel from which motion is desired) is fixed by means of a
carrier stud, two friction straps. The opposite ends of these straps to those held by
the carrier stud, is arranged to carry two nuts, into which a right & left hand
screw shaft actuated by a lever draws the strap together or vica rerca & so engage
or disengage them with the driving disc at will. The friction straps are provided
with hugs which engage with draw back springs, causing the friction straps to clear
the driving disc when thrown open by the lever.
Provision is also made for taking up the wear of the friction straps.
ELIJAH YEADON.
THOMAS GARFORTH RHODES.
COMPLETE SPECIFICATION.
Improvements in Frictional Clutches.
ELIJAH YEADON Stanningley near Leeds, Yorks Mechanical Engineer
THOMAS GARFORTH RHODES Kirkstall near Leeds, Yorks Mechanical Draughts-
man 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:-
This invention has principally for its object the arrangement of a friction clutch
giving more wear of the friction straps, & more clearance of the driving disc, than
friction clutches of the spring ring construction the wear of which is limited to the
spring of the ring.
In the accompanying drawings
Fig. 1 represents a front elevation of the clutch.
Fig. 2 a sectional elevation through the line A¹ B'.
Fig. 3 a modification of the arrangement for tightening the friction straps to the
driving disc.
Fig. 4 another modification of the above.
A is the drive shaft, upon this shaft A is keyed a driving disc B, also running
loose on the shaft A is another disc C, into this disc C is screwed or fixed the drive
pin D, this pin supports the ends of the two friction straps E E which are drawn
together by means of the right & left hand screw Factuated by the lever G. The
friction straps E E are provided with projections H H, engaging with draw back
springs II, contained in the pockets JJ, cast upon the loose disc C. Also the
ends of the friction straps E E which fit the drive pin D are made with oval holes
to allow the straps to grip the driving disc as they wear away, the draw back
springs I always throwing them open & clear of the driving disc when desirable.
The ends of the friction straps EE which fit the screws F are fitted with

page_text: bushes partly square to prevent turning round, & also with lock nuts F" Fn
to allow of adjusting the wear of the friction straps EE.
Refering to Fig. 3 E E are the friction straps K is the quick threaded screw
for drawing the straps E E together, so as to engage the driving disc B. LLare
adjusting nuts for compensating for the wear of the straps E E. Refering to Fig. 4
EE are the friction straps M M are clutch faces which engage & close the friction
straps E E. N is the adjusting screw or bolt.
Having now particularly declaired & ascertained the nature of this invention
& in what manner the same is to be performed we declair that what we claim is
(1) In a friction clutch the friction straps E E with lugs III, & oval holes for
fixing to the drive pin D, & ends provided with bushes Fat the opposite ends
together with the lock nuts on the same for adjusting the wear all arranged sub-
stantially in the manuer as hereinbefore described & illustrated.
(2) The screw K & adjusting nuts L L shown on Fig. 3, all for the purpose
hereinbefore described.
(3) The clutch faces M_M' & adjusting bolt N all arranged substantially in the
manner & for the purpose hereinbefore set forth.
Dated this 5th day of June 1891.
ELIJAH YEADON.
THOMAS GARFORTH RHODES.