Improvements in or connected with Root Graters and other Machines of a like nature.
Year: 1892

page_text: Date of Application, 1st Jan., 1892
Complete Specification Left, 3rd Oct., 1892-Accepted, 5th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Root Graters and other
Machines of a like nature.
I, WILLIAM BEARD LAKE, of Rayne, in the County of Essex, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in or connected with root graters and
other machines of a like nature, such as root pulpers and turnip cutters.
In machines of this class, as ordinarily constructed, the teeth or cutters have
been formed upon a disc or plate of steel by first cutting apertures in the disc and
then pressing or hammering the teeth out of said disc.
In practice, it is found that there are many objections to the employment of a
toothed disc of the character above described, some of which being that it is
difficult to render the teeth or cutters of the required degree of temper, that they
are difficult to sharpen, and that an entire disc is rendered useless by the breakage
of teeth.
Now the object of my invention is to obviate these defects by forming each tooth
separate and distinct from the others and by separately attaching them to the disc
or plate so that in the event of the breakage of a tooth, the broken tooth may be
easily removed and replaced by a new one whilst each tooth is adapted to be
separately tempered.
For this purpose,
employ a disc or plate of iron or steel, and I form a number
of slots or apertures therein corresponding with the number of teeth intended to be
attached thereto.
The teeth or cutters I form out of thin sheet steel with the cutting portions
shaped to the required form, which, as is well known, varies with the particular
purpose to which it is applied, and therefore need not be specifically described here,
and I insert these teeth or cutters in the apertures of the disc or plate and at the
upper part prolong them so as to take a bearing upon the face of the tooth disc,
and at the lower part, I provide them with clips or tags adapted to pass through
the apertures and to be turned down upon the face of the disc or plate whilst I
provide them with lateral flanges to take a bearing upon the back of the disc or
plate and I thus securely but removeably attach the teeth or cutters thereto.
Or, in lieu of fixing the teeth or cutters in the apertures, I fix them over, or in
front of, the apertures, by any suitable means.
Dated this 1st day of January 1892.
VAUGHAN & SON,
Agents for the Applicant.
'COMPLETE SPECIFICATION.
Improvements in or connected with Root Graters and other
Machines of a like nature.
I, WILLIAM BEARD LAKE, of Rayne, in the County of Essex, 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:—
My said invention relates to improvements in or connected with root graters and
other machines of a like nature, such as, root pulpers, and turnip cutters.
In machines of this class, as ordinarily constructed, the teeth or cutters have
been formed upon a disc or plate of steel by first cutting apertures in the disc and

page_text: then pressing or hammering the teeth out of said disc. In practice it is found that
there are many objections to the employment of a toothed disc of the character
above described some of which being that it is difficult to render the teeth or
cutters of the required degree of temper, and that an entire disc is rendered useless
by the breakage of teeth.
Now the object of my invention is to obviate these defects by forming each tooth
separate and distinct from the others and by separately attaching them to the disc
or plate so that in the event of the breakage of a tooth, the broken tooth may be
easily removed and replaced by a new one, whilst each tooth is adapted to be
separately tempered.
For this purpose, I employ a disc or plate of iron or steel, and I form a number
of slots or apertures therein corresponding with the number of teeth intended to
be attached thereto.
The teeth or cutters I form out of thin sheet steel with the cutting portions
shaped to the required form which, as is well known, varies with the particular
purpose to which it is applied and therefore need not be specifically described here,
and I insert these teeth or cutters in the apertures of the disc or plate, and, at the
upper part, prolong them so as to take a bearing upon the face of the tooth disc
and, at the lower part, I provide them with clips or tags adapted to pass through
the apertures and to be turned down upon the face of the disc or plate, whilst, I
provide them with lateral flanges to take a bearing upon the back of the disc or
plate and I thus securely but removeably attach the teeth or cutters thereto.
Or, in lieu of fixing the teeth or cutters in the apertures, I fix them over or in
front of the apertures by any suitable means.
And in order that the said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings, more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1. is a face view of a portion of the disc or plate of a root grater fitted
with teeth or cutters according to my invention.
Figure 2. is a horizontal section taken on the line 1.-1 of Figure 1.
Figure 3. is a transverse section taken on the line 2.-2. of Figure 2.
Figure 4. is a view of the disc or plate similar to Figure 1. but with the tooth or
cutter removed.
Figure 5. is a side view of a tooth or cutter separately showing the form thereof
prior to its attachment to the disc or plate.
Figure 6. is a similar view to Figure 5. but representing a slightly modified form
of tooth or cutter.
Figure 7. is an end view thereof.
Figure 8. is an end view, partly in section, showing the tooth or cutter attached
to the disc or plate, and,
Figure 9. is a similar view to Figure 1. but representing a further slight
modification.
In the several figures like parts are indicated by similar letters of reference.
Referring to Figures 1. to 5., a. represents the disc or plate and a¹ represents
one of the slots or apertures therein, which is somewhat of a keyhole shape with a
contraction a³ a number of such slots being formed in the disc or plate corresponding
with the number of the teeth intended to be attached thereto.
b represents one of the teeth or cutters which is formed out of thin sheet metal
the cutting portion of which may be shaped to the required form which varies
with the particular purpose to which the tooth or cutter is to be applied as is well
known and therefore need not be specifically described here.
Each tooth or cutter b. is inserted from the back of the disc or plate a. in a slot
or aperture a¹ of the disc or plate a. and it is at its upper part or cutter end bi
prolonged beyond the contracted part a' of the slot or aperture a¹ so as to take a
bearing upon the face of the disc or plate a. at that part, whilst, at its lower part,

page_text: the tooth or cutter b. is provided with a clip or tag 6 which, in the form represented
at Figure 5., is adapted to pass through the slot or aperture a¹ and to be turned
down upon the face of the disc or plate as shown more particularly at Figures 1.
and 2.
The tooth or cutter is also provided with lateral flanges & which take a bearing
upon the back of the disc or plate a, and thus, in conjunction with the extension
and clip or tag b³, securely but removeably attach the tooth or cutter b. to the disc
or plate a.
In the example given at Figures 6., 7. and 8., I have shown a slightly modified
form of tooth or cutter b. in which the tag or clip is permanently set in a position
parallel with the body thereof as shown more particularly at Figure 6. whilst one of the
lateral flanges & serves as the fastening means and is temporarily set at right angles
to the body of the tooth or cutter b. so as to allow the tooth to be inserted, from the
front of the disc or plate a, in the slot or aperture a¹ after which the projecting
flange is turned down upon the back of the disc as shown more particularly at
Figure 8, when the tooth or cutter will be firmly secured in position.
In the example given at Figure 9., in lieu of forming the tags or clips b' to bend
or clip over the face of the disc or plate a. such tag or clip is arranged to take a
bearing upon the back of the disc or plate a. in a similar manner to the side
flanges whilst the tag or clip is secured to the disc or plate a. by means of a
rivet 6, this arrangement is, however, in my opinion, much inferior to those
hereinbefore described.
Or, I may, if desired employ any other suitable means for securely attaching the
teeth or cutters b. to the disc or plate a.
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. In combination with a root grater or the like, a disc or plate formed with a
number of slots or apertures therein adapted to receive separate teeth or cutters,
substantially as herein shown and described and for the purpose stated.
2. In a root grater or the like, the combination of a disc or plate formed with a
number of slots or apertures therein, a number of teeth or cutters and means for
fixing the teeth or cutters over or in the slots or apertures of the disc or plate,
substantially as herein shown and described.
3. In combination with a root grater or the like, a slotted disc or plate fitted with
a number of separate teeth or cutters, substantially as herein shown and described
and for the purpose stated.
4. In a root grater or the like, the combination of a slotted disc or plate and a
number of teeth or cutters formed with extensions and clips or tags to take a
bearing upon one face of the dise or plate and with side flanges to take a bearing
upon the other side thereof, substantially as herein shown and described and for the
purpose stated.
5. A tooth or cutter provided with means of attachment to the disc or plate of
a root grater or the like, substantially as herein shown and described and for the
purpose stated.
Dated this 3rd day of October 1892.
VAUGHAN & SON,
Agents for the Applicant.