Improvements in Grinding Machines for Frame Saws and other Saws.
Year: 1889

page_text: Date of Application, 9th Oct., 1889
Complete Specification Left, 15th Oct., 1889-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in Grinding Machines for Frame Saws and
other Saws.
A communication from abroad by Messrs. HOLST and FLEISCHER, of Christiania, in
the Kingdom of Norway, Merchants.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both
in the County of Lancaster, and 323, High Holborn in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as follows:-
The present invention relates to grinding machines for frame saws of the class
described in English Patent No. 9036 of 1888, granted to Gustav Carlsen and
assigned to Holst and Fleischer.
The invention consists in an improved arrangement of the driving wheel and
connected parts and in the construction of the lever that carries the emery-wheel,
and the object of said improvements is partly to improve the general working of the
machine and partly to make it more handy for operation and make it easy to
reverse the parts, so that the machine may be placed on either side of the saw frame
according to circumstances, and also to make it possible to adjust the emery-wheel,
so that the teeth of the saw may be ground aslant, namely, like knives' edges.
The drawing shows the improved machine in an isometric view.
The machine is mounted on a foot 1 froin which extend the vertical columns 2
united at their upper ends by means of a crosshead 3. Between the columns is
mounted a screw-spindle 4 in bearings, both in the foot and in the crosshead, and a
hand wheel 5 is keyed or fixed on to the top of the screw. An internally screwed
carrierblock 6 slides on and between the columns and is movable on the same by
means of the screw. The carrier-block 6 has a framework consisting of the rods 7
which may be moved horizontally in the carrier-block and secured in any desired
position by means of the set-screw a.
The rods 7 are at each end secured to each other by means of a crosshead, of
which the one to the right 8 has a handle 10, by means of which the machine is
steadied during the operation and supports a forked standard 9. This standard has
a round end, fitting in the crosshead 8 and is prevented from turning by means of a
set-screw b; the forked end of the standard forms journals for a shaft 11, which
on one end carries the driving wheel 12 and on the other is provided with a crank 13.
By these means the driving-wheel may be turned around to the other side.
On the other crosshead 14 is fastened a guide or idle pulley 18 for the driving cord,
mounted on the stud 17 fixed to the adjustable pulley-holder 16, which is attached
to the angle-piece 15 bolted to crosshead 14 by means of the set-screw. c.
The guide pulley frame 15 may be turned around by loosening the screw c.
The holder 16 may be fixed at different heights by means of the screw d.
Between the lugs on the crosshead 14, and swinging on a pine is mounted an
arm 19, which is at the end formed with a prolongation at right angles and here
provided with a revolvable lug 20, that carries the forked lever 21, 22, and the
spindle 23 with the grooved pulleys 24, 25. To the arm 19 is also secured a curved
springing arm 26 which serves for supporting the grinding lever. This latter
consists of two parts, of which the outer one 22 is capable of being adjusted
longitudinally in relation to the other, having a pin 9 which is inserted in the
inner one 21 and may be held securely by means of a set-screw f. By these means
the teeth of the saw-blades may be ground with sharp edges like knives.
On the outer hand of the lever there is a handle 27 and a guard 28 and the spindle 29
on which the emery-wheel 30, the oilcup 31 and the cord-wheel 32 are mounted.

page_text: As it will be seen that the fulcrum of the lever 21, 22 serves at the same time
as axle for the cord-wheel 24, it is obviens that the lever may be swung in all
directions during the grinding without having any effect on the cord, so that this
(the driving cord) will not be loosened or tightened thereby.
Dated this 8th day of October 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLIM DI MUITIVATION,
Improvements in Grinding Machines for Frame Saws and
other Saws.
A communication from abroad by Messrs. HOLST and FLEISCHER, of Christiania, in
the Kingdom of Norway, Merchants.
1, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool and 6 Bank Street, Manchester both in
the County of Lancaster and 323 High Holborn in the County of Middlesex, Civil
Engineer 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 present invention relates to grinding machines for framesaws of the class
described in English Patent No. 9036 of 1888, granted to Gustav Carlsen and assigned
to Holst and Fleischer.
The invention consists in an improved arrangement of the driving wheel and
connected parts and in the construction of the lever that carries the emery-wheel, and
the object of said improvements is partly to improve the general working of the
machine and partly to make it more handy for operation and make it easy to reverse
the parts, so that the machine may be placed on either side of the saw frame according
to circumstances, and also to make it possible to adjust the emery-wheel, so that the
teeth of the saw may be ground aslant, namely, like knives' edges.
The drawing accompanying the provisional specification shows the improved
machine in an isometric view.
The machine is mounted on a foot 1, from which extend the vertical columns 2
united at their upper ends by means of a crosshead 3. Between the columns is
mounted a screw-spindle 4 in bearings, both in the foot and in the crosshead, and a
handwheel 5 is keyed or fixed on to the top of the screw. An internally screwed
carrier-block 6 slides on and between the columns and is movable on the same by
meaus of the screw. The carrier-block 6 has a framework consisting of the rods 7
which may be moved horizontally in the carrior-block and secured in any desired
position by means of the set screw a.
The rods 7 are at each end secured to each other by means of a crosshead, of which
the one to the right, 8, has a handle 10, by means of which the machine is steadied
during the operation and supports a forked standard 9. This standard has a round
end, fitting in the crosshead 8, and is prevented from turning by means of a set
screw b; the forked end of the standard forms journals for a shaft 11, which, on one
end, carries the driving wheel 12 and on the other is provided with a crank 13. By
these means the driving wheel may be turned around to the other side.
On the other crosshead 14 is fastened a guide or idle pulley 18 for the driving
cord, mounted on the stud 17 fixed to the adjustable pulley-holder 16, which is
attached to the angle-piece 15 bolted to crosshead 14 by means of the set-screw c
The guide pulley frame 15 may be turned around by loosening the screw c. The
holder 16 may be fixed at different heights by means of the screw d.
.
Between the lugs on the crosshead 14, and swinging on a pine is mounted an arm 19,
which is at the end formed with a prolongation at right angles and here provided
with a revolvable lug 20, that carries the forked lever 21, 22 and the spindle 23 with
the grooved pulleys 24, 2. To the arm 19 is also secured a curved springing arm 26

page_text: which serves for supporting the grinding lever. This latter consists of two parts, of
which the outer one 22 is capable of being adjusted longitudinally in relation to the
other, having a pin g which is inserted in the inner ono 21 and may be held securely
by means of a set screw f. By these means the teeth of the saw blades may be ground
with sharp edges like knives.
On the outer hand of the lever there is a handle 27 and a guard 28 and the
spindle 29 on which the emery-wheel 30, the oilcup 31, and the cord-wheel 32 are
mounted.
As it will be seen that the fulcrum of the lever 21, 22 serves at the same time as
axle for the cord-wheel 24, it is obvious that the lever may be swung in all directions
during the grinding without having any effect on the cord, so that this (the driving
cord) will not be loosened or tightened thereby.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. In a grinding machine for framesaws substantially as described, the combination
with the horizontal sliding rods 7 of the standard 9 and the driving-wheel 12 mounted
thereon, the guide pulley 18 and the pulley 24 mounted on an axle 23 on the outer
end of the swinging arm 19, the axle 23 serving at the same time as a fulcrum for
the grinding lever.
2. The construction of the grinding lever of two parts 21, 22, adjustable longitu-
dinally in relation to each other, so that the grinding-wheel may be adjusted at an
angle in relation to the saw-blade.
3. A portable emery-wheel grinding-machine for framesaws and other saws sub-
stantially as specified and shown.
1000
WM. P. THOMPSON & Co.,
Agents for the Applicant.