Improvements in Polishing Machines.
Year: 1891

page_text: Date of Application, 24th Mar., 1591-Accepted, 2nd May, 1891
COMPLETE SPECIFICATION.
Improvements in Polishing Machines.
CESTER
I, HENRY TROST, of 195 Mohawk Street, Cohoes, in the County of Albany,
State of New York, United States of America, Furniture Manufacturer, 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 :-
This invention relates to certain new and useful improvements in polishing
machines designed primarily for rubbing and polishing furniture but it will be
at once evident that it may be used for polishing all wood metal or mineral
surfaces.
The invention has for its object among others to provide an improved machine
of this character wherein shall be combined simplicity of construction, ease of
manipulation and efficiency of the work accomplished.
I suspend the machine from above so as to avoid occupying the space below I
pivot the carrying frame so that it may be easily moved upon its pivot when
desired, I arrange the brush or roll actuating pulley so that it may be moved
endwise upon its shaft and yet revolve therewith. The roll or brush is operated
directly from this pulley by belts passed over the said pulley and over or in
grooves in each end of the roll or brush. The pivoted frame is provided with
weights suspended from the rear which may be regulated according to the degree
of
pressure it is desired to put on the surface to be polished.
Other objects and advantages of the invention will hereinafter appear and the
novel features thereof will be specifically defined by the appended claims.
The invention is clearly illustrated in the accompanying drawings which with
the letters of reference marked thereon form a part of this Specification and in
which
Fig. 1 is a side elevation of my improved polishing machine.
Fig. 2 is a front view thereof.
Fig. 3 is a perspective view of a portion of the shaft upon which the actuating
pulley is carried.
Fig. 4 shows an end view of the actuating pulley on an enlarged scale.
Like letters of reference indicate like parts throughout the several views.
Referring now to the details of the drawings by letter, A designates hangers of
which there are preferably two, suspended from the ceiling or some suitable support
overhead and suitably journaled in suitable bearings in these hangers is the shaft B
on which are the fast and loose band pulleys C and D respectively over which the
driving belt (not shown) passes, power being derived from any suitable source not
shown. This shaft is extended at one end beyond the hanger as shown in Fig. 2
and on this extended end is a cone pulley E arranged between the said hanger and
one side of the pivoted frame soon to be described.
From each hanger A extends outward and downward an arm a as seen in Figs. 1
and 2, and F is a frame pivoted to the lower ends of these arms as seen best in
Fig. 1. This frame may be constructed in any suitable manner adapted to the
purpose for which it is to be used and may be pivoted nearer to or farther from its
centre as found most desirable. It may be of wood or iron or a combination of the
two preferably of wood trussed as shown in Fig. 1 and it is as will be apparent,
independent of shaft B in its movement. It will also be obvious that in order that
the swinging frame may be inclined at any permissible angle and at the same time
maintain a uniform distance between the centre of shaft B and of shaft H the
pivotal points of suspension of frame F should be at dead centre with shaft B.
G is a belt passed over the cone pulley E and over another cone pulley b on the

page_text: shaft H at the front end of the pivoted frame. This shaft H is provided with
longitudinal grooves e preferably three in number as shown in enlarged perspective
in Fig. 3 and preferably V-shaped in cross section. I is the driving or actuating
pulley provided upon its periphery with a plurality of grooves d and sleeved upon
the shaft H, being provided at its ends with beveled wheels or projections e
journaled in brackets secured by a plate i to the ends of the pulley which wheels
slide in the grooves e of the shaft so that as the shaft revolves the actuating pulley
will revolve with it yet the pulley is free to be moved endwise on the shaft for
instance by pulling sideways on the brush hereinafter mentioned to change its
location as the nature of the work requires.
The pivoted frame is provided with a system of weights for regulating the
pressure to be placed upon the surface to be polished. The rear ends of the frame
are illustrated as provided with weights L secured thereto and adjusted thereon by
the set screws j. There is also illustrated a bail M suspended as shown from the
frame so as to be free to swing, and from the lower end or cross bar of this bail is
suspended a weight N which can be easily removed to be supplanted by another
which will be heavier or lighter as desired, or additional weights may be suspended
from the bail.
The roll or brush J may be of any desired length and should be covered with a
material best adapted to the purpose for which it is to be used, for instance the
covering may be cloth, sand or emery paper, chamois, bristle or any other
applicable material which may have a base or foundation provided for it made of
felt or other elastic material. It is driven by the belts K which pass over the
pulley 1 in grooves selected according to the length of the roll and each of these
belts runs in a groove at the ends of the roll as seen best in Fig. 2. The roll is
guided by handles loose upon the ends of the axis of the roll. The actuating
pulley may be moved endwise upon its shaft as desired in any suitable manner.
I have indicated by letters and P parts intended to represent any suitable
form of belt shipper to move the power belt from the loose to the tight pulley and
vice-vers but the same is not illustrated and described in detail as it forins no part
of this invention and may be of any well known and suitable construction.
Various modifications in detail may he resorted to without departing from the
spirit of the invention or sacrificing any of its advantages.
I have shown and described herein a particular form of polishing roll which is
considered to give the best results but I make no claim to the same in this
Application.
Having now particularly described and ascertained the nature of the said inven
tion and in what manner the same is to be performed, I declare that what. 1
claim is :-
1. The combination with the suspended pivoted frame of the actuating pulley
travelling longitudinally of a shaft carried by said frame and the roll operated by
belt directly from the said pulley as set forth.
2. The combination with the suspended frame pivoted between its front and rear
ends of the actuating pulley carried thereby means for revolving the said pulley
and the roll supported by belts passed over the actuating pulley and revolved by
the same belts substantially as specified.
3. The combination with the swinging frame of the grooved actuating pulley the
roll and the belts arranged in grooves in the pulley and in the roll as set forth.
4. The combination with the pivoted suspended frame of the endwise movable
actuating pulley carried by a shaft on said frame the roll and the belts connecting
the pulley and roll substantially as specified.
5. The combination with the pivoted suspended frame of the weights at the rear
end thereof the actuating pulley at the front end and movable endwise upon its
shaft and the roll supported and driven by belts passed around the actuating pulley
substantially as specified.
6. The combination with the hangers formed with arms extended outward and

page_text: downward of the drive shaft journaled in the hangers the frame pivoted in the arms
the cone pulleys and belts connecting them the grooved actuating pulley carried by
a shaft on the pivoted frame the roll and the belts connecting the pulley and roll
and supporting the latter substantially as specified.
7. The combination with the shaft having longitudinal grooves of the pulley
having at its end beveled wheels travelling in said grooves substantially as
specified.
Dated this 24th day of March 1891
W. P. THOMPSON & BOULT,
Agents for the Applicant.