An Improved Adjustable Protective Device or Cover for Emery Wheels and the like.
Year: 1895

page_text: Date of Application, 18th Dec., 1895
Complete Specification Left, 12th Sept.. 1896-Accepted, 17th Oct., 1896
PROVISIONAL SPECIFICATION.
An Improved Adjustable Protective Device or Cover for Emery
Wheels and the like.
We, GUSTAV MAYER and CHRISTIAN SCHMIDT both of Offenbach-on-Main
in the Empire of Germany, Manufacturers, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object a protective device for emery wheels and is so
constructed as to be adjustable in size so as to be applicable for various sized
emery wheels, whilst it may also be adjusted relatively to the wear of the wheel.
The whole device may also be adjusted to render any part of the emery wheel
accessible.
The new protective cover or hood consists of two or more corrugated curved
strips of strong sheet metal, which are attached to each end of a cross bar and
their free ends connected by plates and pins or other suitable fastening device.
The fastening of these free ends is so arranged as to be easily released and
again secured in order to admit of the ends of the sheet metal cover being pushed
closer together or overlapped if desired. The length of the sheet metal cover
may thus be increased or diminished. Several holes are provided in the cross bar
for the other ends of the sheet metal cover, so that the radius of the circle to be
enclosed may also be altered at will.
In order also to allow of the cover being so adjusted that any desired part of
the wheel may be accessible without the cover having to be removed, the cross bar
is mounted in supports in such a way as to be revoluble in either direction. It is
fixed in the desired position by set screws which work in a slot in the support or
by other suitable means.
We prefer to use two cross bars, one being mounted at each side of the emery
wheel.
It is obvious that the improved cover may be constructed with or without any or
all the above means of adjustment.
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents for the Applicants.
An Improved Adjustable Protective Device or Cover for Emery
Wheels and the like.
We, GUSTAV MAYER, and CHRISTIAN SCHMIDT both of Offenbach-on-Main
in the Empire of Germany, Manufacturers, 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:-
The high speed of revolution at which emery wheels are made to run renders
the wheel liable to burst as is well known, whereby the workman is constantly
exposed to great danger of injury. This cannot be entirely avoided even where
the best material is employed for the wheels.. Efforts have therefore been made

page_text: o employ protective devices, but no protective cover or hood has yet been
produced which can resist the great force-of the flying pieces of a bursting wheel.
Our invention has for its object to overcome the above disadvantage and
consists in forming a protective. hood or cover of curved, corrugated sheet metal,
uch as iron or steel. This mode of construction allows of the cover or hood
eing adjusted within considerable wide limits, and of thus being regulated
ccording to the wear and tear of the wheel and adjusted so as to be applicable
or various sized emery wheels.
In order however that all parts of the emery wheel may be utilised, which is
ecessary by reason of the variety of articles to be treated, the whole device may
e made revoluble about the wheel. It may however be made without this means
f adjustment.
Figures 3 and 4 are detail views.
The improved protective cover or hood consists of two or more corrugated
curved strips J of strong sheet metal, which are attached to each end of a cross
bar G and their free ends connected by plates H and pins K or other suitable
fastening device.
The fastening of these free ends is so arranged as to be easily released and
again secured in order to admit of the ends of the sheet metal cover J being pushed
closer together or overlapped if desired. The length of the sheet metal cover
may thus be increased or diminished. Several holes are provided in the cross bar G
for the aforesaid connection of the other ends of the sheet metal cover J by
means of pius Z, so that the radius of the circle to be enclosed may also be altered
at will.
In order also to allow of the cover being so adjusted that any desired part of
the wheel may be accessible without the cover having to be removed, the cross
bar G is mounted in supports D in such a way as to be revoluble in either direction.
It is fixed in the desired position by set screws L which work in a slot M (Figure 3)
in the support or by other suitable means.
We prefer to use two cross bars, G, one being mounted at each side of the emery
wheel.
It is obvious that the improved cover may be constructed or employed with or
without any or all the above means of adjustment.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is―
1. The improvement in protective covers or hoods for emery wheels and the like
which consists in forming them of corrugated sheet metal.
2. A protective cover or hood for emery wheels, consisting of strips of corru-
gated sheet metal adjustably connected to each other and to supports or cross-bara
substantially as and for the purpose set forth.
3. In a protective cover or hood for emery wheels the combination with the
cover proper, of a swinging or revoluble frame or cross-bar carrying said cover and
means for setting said frame at any desired angle, substantially as and for the
purpose set forth.
4. The general construction and combination of parts taken as a whole, forming.
the improved adjustable protective device or cover for emery wheels and the like,
substantially as hereinbefore described and illustrated.
Dated this 11th day of September 1996.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants...