Improvements in and relating to Ratchet Gearing.
Year: 1899

page_text: Date of Application, 21st July, 1899-Accepted, 21st Oct., 1899
Communicated from abroad by DEERING HARVESTER COMPANY, of Corner of
Fullerton and Clybourne Avenues, Chicago, Illinois, United States of
America, Manufacturers.
Improvements in and relating to Ratchet Gearing.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 consists in such an arrangement and combination of parts (essen-
tially a sprocket wheel or gear mounted loosely upon a shaft, but adapted to
be clutched thereto) as to enable an operator, by manual means, first, to actuate
the sprocket wheel or gear adapted to give movement to other portions of
machinery as may be geared to it by chain or otherwise; to give movement to
the shaft upon which the said wheel is loosely supported, without turning the
wheel; or to give motion to the wheel without turning the shaft upon which it
is supported. I have shown my invention as applied to a self-binding harvester.
In the accompanying drawing-
Fig. 1 is a rear elevation of a sprocket wheel suitably supported upon the
packer shaft of an ordinary self-binding harvester.
Fig. 2 is a sectional plan view of the sprocket wheel and a portion of the said
packer shaft, its bearing and one of its supports.
Fig. 3 represents a crank to be used in turning the sprocket wheel manually.
Fig. 4 shows a modified form of packer shaft and crank for turning the same.
A, as shown, is a sprocket wheel, but where desirable it may be a gear wheel.
Upon it is pivoted the pawl B, which oscillates in a suitable bearing a in the
wheel A. I have shown the pawl as having a large, square axle opening b,
into which the square ends of the crank may be inserted. C is a sleeve, as here
shown, but it may be treated merely as a shaft having a square hole c¹ in its end
or otherwise adapted to receive the crank. The sleeve is supported in the bear-
ing G that is sustained by the support H. Upon the end of this sleeve are the
ratchets C, with which the working end of the pawl B engage. The pawl is
held in working position by the spring 6. Near the periphery of the wheel A
Is the square opening d. A pin bis inserted through the axis of the pawl out-
ide of the support in the wheel to hold it in place. In a self-binding harvester
of the kind in which the binding attachment is adjusted longitudinally a slip
haft of some form is, of course, needed. In the present instance I have shown
he packer shaft to be squared as at e, and adapted to slide within the sleeve above
entioned. As shown the chain E may be considered as connected to the
levating devices, on a self binding harvester.
The operation of my invention is as follows:-
In case it is desired to turn all of the parts here shown the crank F is inserted
the opening d. It will readily be understood that the whoal will 1.

page_text: motion, such mechanism as is connected to it by means of chain or gearing will
be moved, and the shaft upon which the wheel is supported will be rotated.
If it is desired to turn the packer shaft alone, which is here shown as a sleeve,
the crank will be inserted into the opening c. When turned in the direction
of the movement of the hands of a watch, which is the only direction needed
in the present instance, the ratchets will simply deflect the end of the pawl out
of the way and rotate under it.
If the crank F be inserted into the opening band turned in the direction of
the movement of the hands of a watch, the first effort will be to raise the end
of the pawl from engagement with the ratchets c, when the wheel A will be free
to turn without giving motion to the sleeve. Stated in short, it may be said
that if the crank be inserted in the opening d the entire selfbinding harvester
may be operated by hand. Inserting the crank in the opening c¹ the binding
attachment alone may be operated. Inserting in the opening b, the elevators of
the machine alone may be operated.
If longitudinal adjustment of the binding attachment is not required, the
sliding connection of packer shaft proper and the sleeve shown will not be
needed, and the shaft portion itself may extend through the sprocket wheel and
a square be formed on its end, in which event the socket in the crank, as shown
in Fig. 4, will furnish efficient means for rotating it.
The crank may be considered simply as the tool by which the advantages of
my invention are made available.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondents I declare that what I claim is:-
1. The combination of a shaft, a wheel loosely mounted thereon, a clutching
device normally locking said shaft and wheel together, and means for rotating
the wheel that shall first unclutch it from the shaft.
Ja...
2. Driving gearing consisting of a gear or sprocket wheel, a shaft upon which
said gear or sprocket wheel is loosely mounted, a clutch consisting of a ratchet
and pawl for connecting the wheel and shaft, and means for applying a rotary
motion to the wheel that shall first move the pawl from engagement with the
ratchet.
44.
3. The combination of a wheel, its supporting shaft, a ratchet on the shaft,
and a pawl on the wheel, the wheel also having the opening d, the pawl having
the opening b, and the shaft having the opening c.
4. The combination of a shaft, a wheel loosely mounted thereon, a clutch
device normally locking the wheel to the shaft, a bearing on the wheel to receive
a hand crank for turning the wheel and shaft together, a bearing on the shaft
by means of which the hand crank may be connected directly to the shaft to
turn it independently of the wheel, and a second bearing on the wheel to receive
the hand crank, the clutching device being connected with this bearing so that
when the wheel is rotated by putting the crank in this bearing the clutch will
first be moved to unlock the wheel from the shaft.
Tanted this 21st day of Tul 1900
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
J