NEW OR IMPROVED MACHINERY FOR POLISHING AND GRINDING METALLIC TUBES RODS AND BARS "
Year: 1883

page_text: LETTERS PATENT to Charles Harvey the younger of Yardely in the County
of Worcester Manager of Works and William Paddock of Birmingham in the
County of Warwick Machinist for an Invention of "NEW OR IMPROVED
MACHINERY FOR POLISHING AND GRINDING METALLIC TUBES RODS AND
BARS
"
PROVISIONAL SPECIFICATION left by the said Charles Harvey, tho
younger, and William Paddock at the Office of the Commissioners of Patents
on the 4th August 1883.
CHARLES HARVEY the younger of Yardley [Yardely] in the County of Worcester
Manager of Works and WILLIAM PADDOCK of Biriningham in the County of
Warwick Machinist "NEW OR IMPROVED MACHINERY FOR POLISHING AND
GRINDING METALLIC TUBES RODS AND BARS
"
Our invention consists of machinery for polishing and grinding metallic tubes
rods and bars the parts of the said machinery being constructed arranged and
worked substantially in the manner hereinafter described.
By the use of machinery constructed according to our invention the polishing
and grinding of metallic tubes rods and bars aro effected with greater expedition
and more uniformly and economically than by the employment of hand labour.
In constructing a polishing machine according to our invention wo mount over
the bed of the machino a parallel horizontal rotating shaft upon which a series of
ten or other number of hanging frames is supported the said hanging frames
turning freely on the said shaft. Between the sides of each of the hanging frames
is a driving pulley fixed on and taking motion from the rotating shaft. At the
bottom of each hanging frame a polishing buff or bob is carried the said buffs or
bobs boing driven by driving bands from the driving pulleys described on the
rotating shaft along one side of the series of polishing buffs or bobs thus arranged
the tube or rod to be polished is supported the buffs or bobs being pressed against
the tubo rod or bar by springs or weights acting upon the hanging frames. The
tube rod or bar to be polished has a to-and-fro sliding motion given to it and also

page_text: a slow intermittent rotatory motion so as to bring every part of the tube rod or
bar in turn under the operation of the rotating buffs or bobs.
We effect the to and fro sliding motion of the tube rod or bar by supporting one
end in a slide working on the bed of the machine the required motion being given
to the slide by means of a heart shaped cam working between studs on the said
slide. At the end of each bachward and forward stroke of the tube it is turned
through a small angle by means of a train of wheels to which an intermittent
motion is given by the heart shaped cam described.
Instead of supporting the buffs or bobs in the hanging frames described they
may be connected with and supported by a bar or frame having a sliding motion
whereby they may be made to approach to and press upon the tube or rod under
operation.
Where the buffs or bobs are supported by a rod or frame as last described the
longitudinal motion of the tube or rod may be dispensed with the buffs or bobs
being moved longitudinally instead of the tube or rod.
Instead of giving the motions to the tube or rod in the way described the
following mechanism may be employed. The tube or rod is connected to a shaft
carrying a toothed wheel the said shaft having a to and fro motion communicated
to it by means of a hollow double rack having within it a pinion carried by an
oscillating support. Rotatory motion being given to the said pinion it commu-
nicates the required to and fro sliding motion to the tube or rod. Each time the
shaft and toothed wheel approach the end of their stroke they are made to rotate
through a small angle by means of a pawl which is carried by an arm travelling
upon a fixed-horizontal-plate_At each end of this plato is an incline up which
the arm carrying the pawl travels as the shaft and toothed-wheel-approach the
end of their stroke. The toothed wheel and shaft are thus moved through an
angle dependent upon the height of the inclines described and the tube or rod has
thus communicated to it an intermittent-rotation as well as the longitudinal motion
described.
For the purpose of supplying the rotating buffs or bobs with powdered omery
or other polishing material we fix over the bed of the machine a horizontal tubular
feeder having in it a series of vertical spouts or openings situated immediately
over the several buffs or bobs. At the ends of the machine are rollers over which
a flexible endless band slowly travels the said band travelling through the feeder
described and also through the hollow bed of the machine which hollow bed
constitutes a reservoir for containing the omery or other polishing material either
dry or mixed with oil or other liquid. The travelling endless band carries a serios
of vanes or scoops and brushes by which the polishing material is conveyed to the
feeder and forced through the spouts or openings to the buffs or bobs.
Our invention is applicable to grinding or smoothing the joints and other parts
of brazed and welded metallic tubes as well as rods and bars by substituting for
the buffs or bobs described a series of emery wheels in which case the mechanism
for supplying the emery or polishing material is dispensed with. Where necessary
or desirable we first grind the tube rod or bar and afterwards polish it.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Harvey, the younger, and William Paddock in tho Patent
Office on the 17th January 1884.
CHARLES HARVEY the younger of Yardley in the County of Worcester, Manager
of Works and WILLIAM PADDOCK of Birmingham in the County of Warwick
Machinist "NEW OR
IMPROVED MACHINERY FOR POLISHING AND GRINDING
METALLIC TUBES, RODS AND BARS
"
Our invention consists of machinery for polishing and grinding metallic tubes,
rods and bars, the parts of the said machinery being constructed, arranged and
worked substantially in the manner hereinafter described.
By the use of machinery constructed according to our invention tho polishing
and grinding of metallic tubes, rods and bars are effected with greater expedition
and more uniformly and economically than by the employment of hand labour
In constructing a polishing machine according to our invention wo mount over
the bed of the machine a parallel horizontal rotating shaft upon which a series of
ten or other number of hanging frames is supported, the said hanging frames
turning freely on the said shaft.
Between the sides of each of the hanging frames is a driving pulley fixed on and
taking motion from the rotating shaft. At the bottom of each hanging frame a
polishing buff or bob is carried, the said buffs or bobs being driven by driving
bands from the driving pulleys described on the rotating shaft. Along one side of
the series of polishing buffs or bobs thus arranged the tube or rod to be polished is
supported, the buffs or bobs being pressed against the tube rod or bar by springs or
weights acting upon the hanging frames. The tube, rod or bar to be polished has
a to-and-fro sliding motion given to it and also a slow intermittent rotatory motion
so as to bring every part of the tube, rod or bar, in turn under the operation of the
rotating buffs or bobs.
We effect the to-and-fro sliding motion of the tube, rod or bar by supporting
one end in a slide working on the bed of the machine, the required motion being
given to the slide by means of a heart shaped cam working between studs on tho
suid slide. At the end of each backward and forward stroke of the tubo it is
turned through a small angle by means of a train of wheels to which an
intermittent motion is given by the heart shaped cam described.
Instead of supporting the buffs or bobs in the hanging frames described they
may be connected with and supported by a bar or frame having a sliding motion
wheroby they may be made to approach to and press upon the tube or rod under
operation.
Where the buffs or bobs are supported by a rod or frame as last described, the
longitudinal motion of the tube or rod may be dispensed with the buffs or bobs
being moved longitudinally instead of the tube or rod.
Instead of giving the motions to tho tube or rod in the way described the
following mechanism may be employed. The tube or rod is connected to a shaft
carrying a toothed or ratchet wheel the said shaft having a to-and-fro motion
communicated to it by means of a hollow double rack having within it a pinion
carried by an oscillating axis or support. Rotatory inotion being given to the said
pinion it communicates the required to-and-fro sliding motion to the tube or rod.
Each time the shaft and toothed wheel approach the end of their stroke they are
made to rotate through a small angle by means of a pawl which is carried by an
arm travelling upon a fixed horizontal plate. At each end of this plate is an
"

page_text: incline up which the arm carrying the pawl travels as the shaft and toothed wheel
approach the end of their stroke. The toothed or ratchet wheel and shaft are thus
moved through an angle dependent upon the height of the inclines described and
the tube or rod has thus communicated to it an intermittent rotation as well as the
longitudinal motion described.
For the purpose of supplying the rotating buffs or bobs with powdered emery or
other polishing material, we fix over the bed of the machine a horizontal tubular
feeder having in it a series of vertical spouts or openings situated immediately
over the several buffs or bobs. At the ends of the machine are rollers over which
a flexible endless band slowly travels the said band travelling through the feeder
described and also through the hollow bed of the machine which hollow bed
constitutes a reservoir for containing the emery or other polishing material either
dry or mixed with oil or other liquid. The travelling endless band carries a series
of vanes or scoops and brushes by which the polishing material is conveyed to the
feeder and forced through the spouts or openings to the buffs or bobs.
We will now proceed to describe with reference to the accompanying Drawings
the manner in which our invention is to be performed.
Figure 1 represents in end elevation (partly in section) and Figure 2 in side
elevation machinery for polishing metallic tubes constructed according to our
invention; Figure 3 is a plan of a portion of the machinery. The same letters
indicate the same parts in Figures 1. 2 and 3.
a is the hollow bed of the machine supported on the legs or standards bb: c is a
horizontal rotating shaft situated over and parallel to the said bed a, the said
shaft-e-turning in the uprights or bearing plates d, d and being driven from the
fast pulley of the fast and loose pulleys-at de,e..are hanging frames supported
by and turning freely on the shaft c. These frames e, e are cranked at about-their-
middle so that their forward motion is not interfered with by the tubular feeder f
herein after described-(sec-figure 1). Each hanging frame e, e carries at its bottom
a rotating polishing buff or bob g and between the sides of each hanging frame is a
driving pulley fixed to and taking motion from the rotating shaft c. The
polishing buff or bob g of each hanging frame is driven by two driving bands
passing over the driving pulley hand over driving pulleys on the bush of the buff
or bob. The the tube to be polished is supported in the supports i. i on the bed a
shown in Figures 1 and 3. In these supports the tube is capable of a-to-and fro
sliding motion and of a slow intermittent rotary motion. The rotating buffs or bobs
are prossed against the tube to be polished by means of coiled springs fixed to tho
hanging frames e, e and to the fixed feeding trough f. One of these coiled springs
is shown in Figure 1 but the buff or bob in the said Figure 1 is represented out of
action, that is, not pressed against the tube k. The to and fro sliding motion of the
tube and its intermittent rotary motion are effected by the following combination
of parts:
The tube to be polished is fixed to the front end of the rod the other or rear
end being connected at 3 to the slide working in tho frame a² on the bed a of
the machine. On the said slide are antifriction rollers m, m between which the
heart shaped cam n works. This cam is fixed on the shaft n which is driven by
a band on the pulley n³. By the rotation of the heart shaped cam n a slow
reciprocating motion is given to the slide and through the said slide and rod i
to the tube under operation. On the inner face of the driving pulley n³ on the
shaft carrying the heart shaped cam n are two teeth or drivers n, n' situated at
opposite points on the said driving pulley n³; p is a parallel shaft carrying a stud
wheel which has an intermittent motion through part of a circle given to it at
each semi rotation of the pulley n³ by one of its teeth or drivers n* acting upon
one of the studs of the stud wheel p. For the purpose of holding the stud
wheel p³ in its proper relative position in respect to the pulley n³ until the teeth n
como into action, the said pulley n³ carries a concentric flange n³, the inner face of t
which bears against one of the studs of the stud wheel. One of the studs of the
stud wheel-engages with the flange n' and another stud is removed from the said

page_text: flange through the slots in the said flange at each semi-rotation of the pulley `n³.
The intermittent rotary motion of the stud wheel p' is transmitted through
the friction gearing at p³, ' to the rod to which the tube under operation is
secured: The large friction wheel 2 is connected to the rod 2 by a sliding key so
that the said rod can slide in the bush of the friction wheel p without ungearing
it from the said wheel. A coiled spring p acting on the bush of the friction
wheel 2 preserves it in contact with the smaller friction wheel p³ on the
shaft p.
Instead of giving an intermittent rotary motion to the tube by the mechanism
described and represented, the said tube may have a slow continuous rotary motion
given to it by dispensing with the stud wheel 222 and gearing the shaft n to the
shaft p by means of toothed gearing.
By the sliding and intermittent or slow continuous rotary motion communicated
to the tube, every part of it is in turn brought under the operation of the series
of polishing buffs or bobs g, g and the polishing of the tube thereby effected.
After the tube has been polished the whole of the hanging. frames c, e are
withdrawn out of action. This may be effected by an axis or bar connected
with the hanging frames, which axis is acted upon by a levor so as to push back
the frames.
We supply the rotating bobs or buffs g, g¹ with powdered emery or other
polishing material by means of the tubular feeder f having in it a series of
vertical spouts q situated immediately over the several buffs or bobs. The
polishing material is conducted to the feeder f from the hollow bed or reservoir a
in which the emery or polishing material is stored (oither dry or mixed with oil
or other liquid) by means of the chain or flexible endless travelling band 7 working
over the grooved rollers ², 2 at the ends of the series of polishing buffs. The
rollers are driven by a pulley on the shaft from which shaft the tube
sliding and rotating mechanism is also worked. On the outer side of the travelling
band is a series of vanes or scoops t, or a combination of scoops and brushes, by
which the polishing material is conveyed from the hollow bed a to the feeder f
and forced by means of scrapers u on the innerside of the band through tho
spouts q, q to the buffs or bobs g, g. The polishing material from the spouts q. q
may be guided to the buffs by adjusting plates one of which is marked win
Figure 1 and in the machine represented in Figure 7.
Figure 4 represents in plan and Figure 5 in back elevation a modification of our
invention in which the hanging frames carrying the bobs aro dispensed with and
the bobs are supported by cross dovetail slides carried by a main or longitudinal
slide, the tube to be operated upon having no sliding motion. The said modified
machine also contains mechanism for working the main or longitudinal slide and
for giving the intermittent rotary motion to the tube under operation; Figure 6
is a cross section taken through the slide of the double rack; Figure 7 is an end
elevation of the machine and Figure 8 a cross section of the same taken through
the main or bob slide; Figures 9. 10 and 11 aro portions of the machine for
giving the sliding motion to the bobs and the intermittent rotary motion to the
tube.
g² is the longitudinal or main slide working on the bed a and g³, g³ are the cross
slides supported on the main slide and carrying the rotating bobs or buffs g (seo
Figures 4, 5 and 8). By moving the said cross slides g³, g the bobs g, g carried
by them can be made to approach to and press upon the tube hunder operation;
the said tube having no sliding motion. The reciprocating longitudinal motion of
the main slide g² is effected by the rod g from the double rack slide g. This rod
may be uncoupled from the slide g when required. An axis supported on and
running from end to end of the fixed fraining and having at one end a handle or
lever for working it, carries a series of cams or arms which by being-brought
against the abutments ' on the cross slides g³ force back the series of slides g³
out of action. When the cams ³ are removed from the abutments * coiled springs

page_text: one of which is marked in Figure 4, force forward the slides g³ and press the
buffs or bobs in contact with the tube to be polished.
The mechanism for giving the sliding motion to the main slide g² and an
intermittent rotary motion to the tube under treatment is constructed as
follows:-
The rod to which the tube is connected has fixed upon it a ratchet wheel ย
carried by bearings fixed to the bed of the machine. With the teeth of the ratchet
wheel y the pawl y' engages. The pawl y is carried by the pawl lever y³ turning
loosely on the same axis as the ratchet wheel. The other end of the pawl lever y³
rests upon the horizontal bar go fixed to the rack slide 9 the said rack slide
working in dovetails on the bed of the machine. The said bar 9 is provided with
inclines g, g adjustable on the said bar as best seen in the separate views
Figure 11. A. to-and-fro motion is given to the rack slide g³ by a pinion y gearing
with the double rack 12. The pinion y is carried by the oscillating shaft y
which works in a bearing in the bush which bush is supported by and has a
rocking motion on the shaft y7 by which motion is given to the pinion shaft y
through the bevil gearing at 7" (see Figures 9 and 10). The top bearing of the
shaft y works in a curved slot y10 (Figure 10.)
Rotatory motion being given to the said pinion y it communicates by working
in the double rack y the required to-and-fro sliding motion to the rack slide go.
Euch time the rack slide g approaches the end of its stroke, one or other of the
inclines g lifts the pawl lever y and its pawl y³ acting upon the ratchet wheel y
rotates the latter through an angle dependent upon the height of the adjustable
inclines and the tube fixed to the rod has thus communicated to it an
intermittent rotary motion
When the last described arrangement for giving an intermittent motion to the
tube is used with the arrangement of hanging frames herein first described, the
parts-may be somewhat modified so as to cause the to-and-fro motion of the rack
slide to give both the reciprocating sliding motion. and the intermittent rotary
motion to the tube being polished.
Instead of using a series of rotating buffs or bobs on one side of the tube to be
polished as herein described and illustrated, the buffs or bobs may be duplicated
and used on opposite sides of the tube. This duplication of the buffs or bobs may
be adopted with the hanging frame arrangement first described and also with the
arrangement in which the bobs have a sliding motion while the tube has only a
rotatory motion.
Our invention is applicable to the polishing of rods and bars as well as tubes.
Our invention is also applicable to grinding or smoothing the joints and other parts of
brazed and welded metallic tubes as well as rods and bars, by substituting for the
buffs or bobu described a series of emery wheels in which case the mechanism for
supplying the emery or polishing material is dispensed with. Where necessary or
desirable we first grind the tube, rod or bar and afterwards polish it.
Having now described the nature of our invention and the manner in which
the same is to be performed we wish it to be understood that We claim as our
invention of "New or improved machinery for polishing and grinding metallic
tubes rods and bars", --
First The combination in a polishing or grinding machine of a series of hanging
frames carrying the polishing buffs or bobs or emery or grinding wheels, whether
the said series of hanging frames and their bobs, buffs or wheels be arranged on
one or on opposite sides of the metallic tube, rod or bar to be polished or ground
substantially as herein before described and illustrated in Figures 1 and 2 of the
accompanying Drawings.
Secondly-The arrangements or combinations of parts substantially as hereinbefore
described and illustrated in Figures 2 and 3 of the accompanying drawings for
giving a to-and-fro motion and also an intermittent rotary, or slow continuous
rotary motion, to the tube rod or bar to be polished or ground

page_text: Thirdly-The arrangement or combination of the main and cross slides hereinbefore
described and illustrated in Figures 4. 5. 6. 7 and 8 of the accompanying Drawings
for carrying the series of sliding and rotating polishing buffs, bobs or emery or
grinding wheels, whether the said series of buffs, bobs or wheels be arrranged on
one or on opposite sides of the metallic tube rod or bar to be polished or ground.
Fourthly The arrangements or combinations of parts herein before described and
illustrated in Figures 4. 6. 7. 9. 10 and 11 of the accompanying drawings for
giving a to-and-fro motion to the slide carrying the rotating buffs, bobs or grinding
wheels, or to the tube, rod or bar to be polished or ground, and also for giving an
intermittent rotatory motion to the said tube, rod or bar.
Lastly The arrangement or combination of parts hereinbefore described and
illustrated in Figures 1. 2. 3 and 7 of the accompanying Drawings for supplying
the rotatory polishing buffs or bobs of the polishing machinery with powdered
omery or other polishing material.
In witness whereof we the said Charles Harvey and William Paddock have
hereunto set our hands and seals this fifteenth day of January in the year of our
Lord one thousand eight hundred and eighty four.