IMPROVEMENTS IN MACHINERY FOR GRINDING, CLEANING, AND POLISHING TUBES, BARS, RODS, OR STRIPS OF BRASS OR OTHER METAL." PROVISIONAL SPECIFICATION
Year: 1877

page_text: LETTERS PATENT to Richard Brown Evered, of Drury Lane, in the County of
Middlesex, and Edward John Read, of Smethwick, in the County of Stafford,
for the Invention of "IMPROVEMENTS IN MACHINERY FOR GRINDING, CLEANING,
AND POLISHING TUBES, BARS, RODS, OR STRIPS OF BRASS OR OTHER METAL."
PROVISIONAL SPECIFICATION left by the said Richard Brown Evered and
Edward John Read at the Office of the Commissioners of Patents on the 16th
March 1877.
RICHARD BROWN EVERED, of Drury Lane, in the County of Middlesex, and
"IMPROVEMENTS
EDWARD JOHN READ, of Smethwick, in the County of Stafford.
IN MACHINERY FOR GRINDING, CLEANING, AND POLISHING TUBES, BARS, RODS, OR
STRIPS OF BRASS OR OTHER METAL"
Our said Invention relates to machinery for grinding, cleaning, and polishing brass
or other metal tubes, or round bars, or rods, or strips, or lengths of brass or other
metal with flat or planc surfaces.
The main object of the said Invention is to accomplish this work economically
and quickly, and in such a manner that the metal surfaces polished by the said
machinery require no finishing by hand labor.
In carrying our said Invention into practise we subject the tubes, rods, or bars to
a longitudinal or endwise rubbing action, and also to a rotary or transverse rubbing.
For this purpose we provide the machine with rotating clamps or holders for griping
the ends of the tubes, rods, or other articles being ground or polished. The longi-
tudinal rubbers, scourers, or polishers are secured in cross bars, which forms part of
a frame fitted to slide on or in ways at the sides of the machine, which frame has a
to-and-fro motion given to it by a crank and connecting rod. These cross bars or
pieces are preferably formed in two parts, that is to say, of top and bottom bars, with
the rubbers or polishers between them. The two parts are secured together by a
cramping screw. There may be any desired number of the said cross bars and series
of rubbers, according to the length of the tube or other article to be cleaned and
D

page_text: polished. The crank pin is made adjustable to permit the stroke of the said frame
to be varied as required.
The rotary or transverse scouring, cleaning, or polishing is effected by rotating
brushes mounted on a shaft, which is supported in bearings attached to the said
sliding frame. The said brushes revolve in pans or cases containing the grinding,
scouring, or polishing material. Each of the brush shafts is provided with a grooved
pulley, and a cord or rope is passed around the same, the said cord having one end
secured to the main frame or other fixed part of the machine. The effect of this
cord is that when the sliding frame moves end wise, the brushes rotate and apply the
grinding, scouring, or polishing material to the metal surfaces. The said cord is
provided with a weight, lever, spring, or other device, by adjusting which the said
rotating shafts can be thrown out of gear if desired. The said rotary brushes are
preferably constructed of discs of wood with hair or bristles projecting from the side
of the same..
We also provide our improved machine with mechanism for applying the grinding
or polishing material by a reciprocating or to-and-fro rotary or circular motion. For
this purpose we arrange near the side of the said sliding frame a bracket fitted with
a strip of vulcanized india-rubber or other suitable material, which acts on the
brush shaft in such a manner that at every movement of the said sliding frame the
brushes have a partial rotation, just sufficient to lubricate or apply the grinding or
polishing material to the metal surfaces.
The aforesaid cramps or holders are preferably constructed with three jaws, jointed
or pivotted to the end of a short shaft. The said jaws convergo at their free or
outer ends, and their outer surfaces are inclined. On these inclined surfaces I fit a
ring, which by sliding upon the jaws permits the same to be adjusted to the size of a
the inetal tubes or bars, and forms the means of securing them thereon. This ring has
a screw stem which extends through the said shaft, and this stem is provided at its
rear or outer end with an adjusting nut, and with means for locking the same.
The shafts or spindles of these clamps are driven by means of toothed wheels or
by other suitable gearing from the driving shaft of the machine.
3
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Richard Brown Evered and Edward John Read in the Great Seal
Patent Office on the 15th September 1877.
RICHARD BROWN EVERED, of Drury Lane, in the County of Middlesex, and
EDWARD JOHN READ, of Smethwick, in the County of Stafford. "IMPROVEMENTS
IN MACHINERY FOR GRINDING, CLEANING, AND POLISHING TUBES, BARS, RODS, OR
STRIPS OF BRASS OR OTHER METAL."
Our said Invention relates to machinery for grinding, cleaning, and polishing brass
or other metal tubes, or round bars, or rods, bars, strips, or lengths of brass or other
metal, with flat or plane surfaces.
The main object of the said Invention is to accomplish this work economically
and quickly, and in such a manner that the metal surfaces polished by the said
machinery require no finishing by hand labor.
In carrying our said Invention into practice we subject the tubes, rods, or bars to
a longitudinal or endwise rubbing action, and at the same time we may keep the
said tubes or other articles stationary, or may give them a rotary, or reciprocating,
or transverse motion, whilst supplying them with scouring, grinding, or polishing
material, as herein-after specified.
In the accompanying Drawings we have shewn a machine constructed according
to our said Invention.
Figure 1 is a perspective view of the said machine.
Figure 2 is a plan, partly in horizontal section, of a portion of the said machine,

page_text: Figure 3 is a side elevation of the same portion of the machine, with some of the
parts thereof omitted.
.
Figure 4 is an end elevation partly in section of the said machine.
Figures 5 and 6 show portions of the said machine detached.
Figure 7 illustrates a modification of a portion of the said machine.
Figures 2, 3, 4, 5, 6, 7, are drawn to a larger scale than Figure 1.
Like letters indicate the same parts throughout the Drawings.
A is the bed or frame of the said machine, which with its supports or standards
A may be formed of cast-iron or other suitable material.
We provide the machine with rotating cramps or holders a, for griping the ends
of the tubes, rods, or other articles to be scoured, ground, cleaned, or polished. These
rotating cramps or holders have journals a fitted to rotate in suitable bearings in
the head a. And this head may be single, as shewn in Figures 2 and 3, or double
as in Figure 7.
The longitudinal rubbers, scourers, or polishers b are very clearly shown in Figure 6.
They are formed of felt, wood, cork, india-rubber, or other suitable material; they
are secured in cross bars, which form part of a slider or frame c fitted to slide on or
in ways d at the sides of the machine. This sliding frame c has a to-and-fro motion
given to it as herein-after described. The cross bars of the sliding frame c are
preferably formed in two parts, a top part c¹ and a bottom part c², with the rubbers
or polishers between them. And these two parts are secured together, and upon the
tubes or other articles, and are tightened thereon as required by a cramping screw c³.
There may be any desired number of the said cross bars, and series of rubbers or
polishers b, according to the length of the tubes or other articles to be ground,
scoured, cleaned, or polished. These cross bars are secured at convenient distances
apart throughout the length of the machine upon the guide rods c¹ by means of
pinching screws c, and the said guide rods are fitted to slide through suitable
bearings in the ends of the frame A, so that when motion is imparted to the said
frame c all of the said cross bars throughout the series will have the same motion,
and the said cross bars may be adjusted to vary the distance between them, according
to the length of the tubes or other articles, by slackening the said pinching screws
and adjusting the cross bars upon the rods c', and then tightening the said screws
again. e is the driving shaft, which receives motion by means of a belt and pulley
from any suitable overhead shaft; fis a toothed pinion, fixed on the said shaft and
geared with the wheel g, which is fixed on the shaft h; i is a crank pin, fitted
adjustably in a radial slot in one of the arms of the said wheel g; and j is a con-
necting rod, one end of which is fitted on the said crank pin, while its other end is
connected with the aforesaid sliding frame, as shewn at j¹, Figure 2. The crank pin
is fitted in a slot, in order that it may be adjustable to vary the length of the stroke
of the said sliding frame, if necessary.
The aforesaid cramps or holders, as shewn in the Drawings, are constructed with
three jaws a³, jointed or pivoted to the end of a short shaft or journal a', which
rotates in the head a³, as above described. The said jaws converge at their free or
outer ends at, and their outer surfaces are inclined or taper, as shewn. On these
inclined surfaces we fit a ring a which, by sliding upon the jaws, permits the same
to be adjusted to the size of the metal tubes or bars, and forms the means of securing
or cramping the tubes tightly between the said jaws. This ring has a screw stem a
which extends through the shaft or journal a¹, and this stem is provided at its rear
or outer end with an adjusting nut a', and with any suitable means for locking
the same, so that it will not be unscrewed or slackened by the vibration of the
machine.
"
The shaft or journal of each of the cramps or holders a is provided with a toothed
pinion. These pinions are all geared together, as shewn in Figure 2, and one of
them is geared with a pinion l, which turns on a short shaft or stud, arranged below
the series of pinions . The pinion is formed or fixed on one end of the boss or
sleeve l, on whose other end is formed or fixed the bevelled pinion . The latter
gears with the bevelled pinion m on the driving shaft n, which by means of a belt

page_text: and pulleys receives movement from an over-head shaft. With the above described
arrangement of gearing, it will be seen that the cramps or holders a, and therefore
the tubes or rods held in them, will receive a rotary motion, and as this motion is
derived through a separate driving shaft, it will be independent of that of the sliding
frame c.
In some instances it is very desirable to impart to the said cramps or holders a
semi-rotary rocking or reciprocating axial movement instead of a continuous circular
motion. For this purpose we provide the machine with mechanism, clearly shewn
in Figures 2, 3, and 4, and which is arranged and operates as follows:-o is a pinion
similar to the pinion l, and which gears with one of the series of pinions k. The
said pinion o is fitted on a short shaft p, and is connected by a clutch q with a lever
arm 7, which receives a reciprocating or to-and-fro motion on the shaft p from a
crank disc r, with whose pin 7 it is connected by the rod 73. The said crank disc
is fixed on the shaft 7, which is driven by a suitable belt and pulleys from any
suitable over-head shaft or otherwise. By means of the lever the said clutch can
be adjusted to set the pinion o into or out of gear with the reciprocating lever arm r
so that the semi-rotative or reciprocating action of the cramps may be commenced
or stopped at any desired moment. And the above described gearing for imparting
to the said cramps the continuous circular movement must also be capable of con-
nection and disconnection by a clutch or otherwise, to allow the rotation of the said
cramps or holders to be commenced and stopped as required.
In some instances, instead of maintaining either a continuous rotary or semi-
rotary movement of the said cramps or holders, we find it desirable to keep them
immoveable or stationary while the sliding scourers or rubbers operate as above
described, and after keeping the tubes or other articles for a time in one position, to
adjust or turn them slightly on their axes, and by means of the gearing above
described we are enabled to effect the adjustment very conveniently.
It will be obvious that in scouring or polishing strips or bars with flat surfaces,
they will be held immovably, while the scourers or rubbers move to and fro over
them.
The grinding, scouring, cleaning, or polishing material is applied by rotating
brushes 8, mounted on shafts s¹, supported in bearings attached to the said sliding
frame. The said brushes revolve in pans or cases 8* containing the grinding, scouring,
or polishing material. Each of the brush shafts &¹ is provided with a grooved
pulleys, and a cord or rope s³ is passed around the same, as clearly shewn in
Figure 3; the said cord has one end secured to the main frame A, or other fixed
part of the machine, and is kept tight by a weight, spring, or strip of india-rubber
or other device attached to its other end. The effect of this cord is that when the
sliding frame c moves endwise, the brushes s rotate and apply the grinding, scouring,
or polishing material to the metal surfaces.
It will not be necessary in many cases that the application of this material should
be continuous, therefore the said cord is slackened at intervals to stop the rotation of
the brushes 8. For this purpose the said weight, spring, or other device, by which
the cord 3 is held, is made adjustable by means of a lever or otherwise, so that the
rotating shafts &¹ can be stopped at any time desired. The said rotary brushes aro
preferably constructed of discs of wood, with hair or bristles projecting from the
side of the same.
We also provide our improved machine with mechanism for applying the grinding
or polishing material by a reciprocating or to-and-fro rotary or circular motion, and
may dispense with the said rope or cord for driving the brushes. For this purpose
we arrange near the side of the said sliding frame a bracket or holder t, fitted with
a strip of vulcanized india-rubber or other suitable material. The said holder is
adjustable in the side of the frame A, and may be set or adjusted in such a position
that at every movement of the said sliding frame, the brush, disc, or pulley will pass
over it, and by its friction, will receive a partial rotation, just sufficient to lubricate
or apply the grinding or polishing material to the metal surfaces. When sufficient
grinding, scouring, or polishing material has been supplied to the tube or other

page_text: articles, the said frame may be drawn back or outward, clear of the said discs or
pulleys, and the brushes will then cease to operate.
The number of the rotating brushes on each shaft may be equal to the number of
tubes or other articles which the machine will take, and there should be a series of
such brushes attached to each set of cross bars of the sliding frame.
Having thus fully described the said Invention and the manner of performing the
same, we wish it understood that we claim,―
First. In a machine for scouring, grinding, cleaning, or polishing metal tubes, flat
bars, strips, and other like articles, the sliding frame, constructed with cross bars
carrying the scourers, rubbers, or polishers, and which are adjustable to suit different
lengths of the work, as above set forth.
Second. The devices for holding the tubes or other articles while the same are
being scoured, ground, cleaned, or polished, consisting of the cramps or holders
constructed with taper or inclined jaws, which are adjustable to suit different sizes
of the work, and which are secured by means of a ring with a screw stem and nut,
as above set forth.
Third. In the said machine the mechanism for operating the said cramps or holders,
and which consists of gearing, whereby either a continuous, circular, or a reciprocating
or rocking motion may be imparted to the said cramps or holders, as above set forth,
and for the purposes specified.
Fourth. In the said machine the combination of the said sliding frame provided
with rubbers or polishers, and the cramps or holders and gearing for rotating or
rocking the same, as above set forth.
Fifth. The combination with the said sliding frame of the circular brushes
operated by the means and in the manner described, and for the purposes specified.
Sixth. A machine for scouring, grinding, cleaning, or polishing tubes, or rods, or
other metal pieces, and which consists of the parts constructed and combined, as
shown in the accompanying Drawings, and operating as above set forth.
In witness whereof, I, the said Richard Brown Evered, for myself and on
behalf of the said Edward John Read, have hereunto set my hand and seal,
this Thirteenth day of September, in the year of our Lord One thousand
oight hundred and seventy-seven.
RICHARD BROWN EVERED. (L.S.)