Improvements in Polishing Wheels.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Polishing Wheels.
I, EDWARD TAYLOR, of Umberslade, Sutton Coldfield, in ths County of Stafford,
Manufacturer, do hereby declare the nature of this invention to be
follows:-
as
This invention consists in a new method of constructing or building up polishing
bobs or wheels of leather, felt, or other suitable material.
The method I adopt is to form a core of wood or metal of the required thickness,
for the wheel in two discs each disc being grooved on the edge of the inner surface
so that when the two discs are brought together the grooves form a dovetail shaped
channel. Instead of laying the leather on the core in the usual manner I take strips
of leather cut in sections with one end shaped into a dovetail or tongue to fit into
the groove on the edge of the core. To build up the wheel these sections of leather
are placed in the groove round one of the discs and the other disc being placed over
it the strips of leather thus projecting edgeways round the core are tightly wedged
together so as to present a perfectly true circular surface of leather built up
edgeways.
TL1900
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.
Improvements in Polishing Wheels.
I, EDWARD TAYLOR, of "Tranmere," Four Oaks, Sutton Coldfield, Manufacturer
(late of "Umberslade," Sutton Coldfield), do hereby declare the nature of my said
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 consists in a new method of constructing polishing wheels or bobs,
where leather, felt or other material is employed as the polishing substance, the aim
and object being simplicity in the manufacture with increased durability.
To form or construct a polishing wheel according to my invention, I employ two
dises of wood or metal of a required diameter and thickness, these discs are pro-
vided upon the inner surfaces and near to the edge with grooves, and when brought
together form an annular dovetail shaped channel. To form the polishing substance
I employ strips of leather, or their equivalent cut into sections of a wedge shape,
one end of which is shaped as a dovetail tongue which engages to half its depth. in
the groove round one of the dises until the circuit is completed, when the groove in
the other disc engages the projecting half of the dovetail sections.

page_text: Or by another mode I may construct this polishing wheel or bob by employing a
central body or carrier (by preference of wood) having a central hole screwed corre-
spondingly to engage upon the screwed spindle for effecting its work, the sections of
leather or their equivalent I here employ correspond somewhat in their general form
to the first named, but in place of the dovetail tongue I slot each edge near the
lower end, and the ends of each of these sections I secure to the periphery or
surface of the central body or carrier employing a number sufficient to complete the
circuit, the slots in each edge now combined form an annular shaped recess or
channel. I construct two metallic plates each having a turned down edge, and each
edge engages in the annular recess or channel in the sections of leather, and is
secured to each side face of the body or carrier. In both. cases the whole being
compressed together and edgways, for durability, and with a true surface for its
work.
And in order that this my said invention may be more fully understood I will now
proceed to describe the same more particularly and for that purpose I shall refer to
the sheet of drawings hereunto annexed, the same letters of reference indicating
like or corresponding parts throughout all the figures.
Figure 1 is a side view in elevation, in its entirety of a polishing wheel or hob, and
constructed according to my invention.
Figure 2 is a view in section of same.
Figure 3 is a side view in elevation as Figure 1 with one part removed.
Figure 4 is a side view in elevation of one disc detached.
Figure 5 is a edge view of same.
Figure 6 is
Figures 1, 2, 3.
a edge view of one section of leather or the like taken from
Figure 7 is a side view of same.
Figure 8 is a side view in elevation in its entirety of a polishing wheel or hob, and
constructed according to my invention.
Figure 9 is a view in section of same.
Figure 10 is a side view in elevation as Figure 8 with one part removed.
Figure 11 is a edge view of one section of leather or the like taken from
Figures 8, 9, 10.
Figure 12 is a side view of same.
Figure 13 is a side view in elevation of the body or carrier detached.
Figure 14 is a edge view of same.
Figure 15 is a side view of one plate detached.
Figure 16 is a edge view of same.
Figure 17 is a side view as Figure 15 shewing the turned down edge.
In Figures 1 to 7-
a and bare the two discs of wood (or metal) screwed interiorly at s to engage with
the screwed spindle and provided upon their inner surfaces with the grooves c, c, and
when brought together form the dovetail shaped channel d as shewn at Figure 2,
e are the sections of leather of a wedge shape, the end f being shaped as a dovetail
tongue, one half engaging in each groove c in each disc a and b as shewn in
Figure 2.
In Figures 8 to 17 I employ the central carrier of wood by preference having
the central hole h screwed interiorly to engage upon the screwed spindle as hitherto,
e are the sections of leather having at the lower end and on each edge the slots i, i,
and these ends are secured to the surface j, of the body or carrier y the said slots in
combination forming the annular shaped recess k. are the two metallic plates
each having the turned down edge m, m, to engage in the recess k, as shewn in
Figure 9.
It will be perceived that the chief feature of this invention consists in constructing
or arranging parts to form polishing wheels or bobs so that such parts can be readily
released or separated and the leather felt or polishing substance when worn removed and
replaced by new; the employment of the sections e (which may be formed by special
tools and raised by dies) being set edgways the grain imparts greater durability

page_text: and admits of the surface being configurated and dressed with polishing material to
suit the various purposes in which these wheels are employed.
The annular recess & may be turned out or formed when all the sections e are
secured to the surface of the carrier g, and the central hole in g I purpose plugging
with a soft metal so that when screwed interiorly the wear will be greater than the
wood.
For securing the discs a and b and the fixing of the leather felt or other material
in an immoveable position when in application I employ screws n passed through a
to b and b to a, and for securing the plates for the purpose above set forth I
employ screws o passing through the holes p and engaging with the carrier g, or in
other ways as practice may determine.
While I have described the above and shewn upon the drawings the features of
my invention, I would observe that I do not limit myself to form or details as I may
make desirable changes without departing from the principle of my said invention.
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 :-
In "Improvements in polishing wheels"
1. The combination, the two discs, a and b with grooves c, c to form the dovetail
channel, the sections of leather e shaped at their ends as a dovetail tongue ƒ for
engaging in d substantially as herein before described and illustrated in Figures 1
to 7.
2. The combination, the carrier, the sections of leather e slotted at the edges
as i i to form the annular recess k, the two metallic plates 67 having turned down
edges mm substantially as herein before described and illustrated in Figures 8
to 17.
The general construction combination and arrangement of parts substantially as
herein before described in the foregoing specification and illustrated on the
accompanying sheet of drawings.
Dated 9th November 1898.
THOS. KENDRICK,
39, Temple Row, Birmingham, Agent for Applicant.